4 Commits

Author SHA1 Message Date
ac585701a3 Fix broken code
Signed-off-by: Alexander Lyall <alex@adcm.uk>
2025-12-16 11:30:59 +00:00
002fbb8b6c Addition of increment/decrement buttons, addition of Auto Random button
Signed-off-by: Alexander Lyall <alex@adcm.uk>
2025-12-16 11:19:51 +00:00
e6da9c8c98 Tweaks to Binary UI
Signed-off-by: Alexander Lyall <alex@adcm.uk>
2025-12-15 19:58:34 +00:00
d4765b3788 feat(v2-alpha): refactor binary simulator and introduce shared site layout
- Rewrite binary simulator with unified unsigned and two’s complement logic
- Support dynamic bit widths from 4 to 64 with LSB-preserving resizing
- Replace legacy unsigned-only scripts with a single maintainable implementation
- Extract binary styles into dedicated CSS and add global site styling
- Introduce shared header, footer, and base layout components
- Migrate Binary page to BaseLayout and modular assets

Signed-off-by: Alexander Lyall <alex@adcm.uk>
2025-12-14 19:46:23 +00:00
23 changed files with 1119 additions and 2347 deletions

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@@ -1,235 +0,0 @@
name: Changelog + Release on main
on:
push:
branches: [ main ]
workflow_dispatch:
jobs:
changelog_and_release:
runs-on: ubuntu-latest
steps:
- name: Checkout (full history + tags)
uses: actions/checkout@v4
with:
fetch-depth: 0
- name: Stop if this is the bot changelog commit
shell: bash
run: |
set -e
msg="$(git log -1 --pretty=%B)"
echo "$msg" | tr -d '\r' | grep -qi "\[skip ci\]" && {
echo "Skipping (bot commit with [skip ci])"
exit 0
} || true
- name: Install git-cliff
shell: bash
run: |
set -e
GIT_CLIFF_VERSION="2.11.0"
URL="https://github.com/orhun/git-cliff/releases/download/v${GIT_CLIFF_VERSION}/git-cliff-${GIT_CLIFF_VERSION}-x86_64-unknown-linux-gnu.tar.gz"
curl -L "$URL" -o /tmp/git-cliff.tar.gz
tar -xzf /tmp/git-cliff.tar.gz -C /tmp
sudo install /tmp/git-cliff-*/git-cliff /usr/local/bin/git-cliff
git-cliff --version
- name: Generate CHANGELOG.md (Keep a Changelog)
shell: bash
run: |
set -e
git-cliff --config cliff.toml --output CHANGELOG.md
test -s CHANGELOG.md
- name: Commit and push CHANGELOG.md if changed (CHANGELOG_PAT)
shell: bash
env:
CHANGELOG_PAT: ${{ secrets.CHANGELOG_PAT }}
run: |
set -e
if git diff --quiet -- CHANGELOG.md; then
echo "No changelog changes."
else
git config user.name "changelog-bot"
git config user.email "changelog-bot@users.noreply.local"
git add CHANGELOG.md
git commit -m "docs(changelog): update changelog [skip ci]"
origin_url="$(git remote get-url origin)"
# Convert SSH origin to HTTPS if needed
if echo "$origin_url" | grep -q "^git@"; then
host="$(echo "$origin_url" | sed -E 's#git@([^:]+):.*#\1#')"
path="$(echo "$origin_url" | sed -E 's#git@[^:]+:(.*)#\1#')"
origin_url="https://$host/$path"
fi
authed_url="$(echo "$origin_url" | sed -E "s#^https://#https://oauth2:${CHANGELOG_PAT}@#")"
git push "$authed_url" HEAD:main
fi
- name: Extract newest changelog section for release body
shell: bash
run: |
set -e
# Extract the first "## ..." section (newest section) from CHANGELOG.md
# Includes the "## ..." heading and everything until the next "## ..." heading.
awk '
/^## / { if (seen) exit; seen=1 }
seen { print }
' CHANGELOG.md > RELEASE_NOTES.md
# Clean trailing whitespace/newlines a bit
sed -i 's/[[:space:]]*$//' RELEASE_NOTES.md
test -s RELEASE_NOTES.md
echo "---- RELEASE_NOTES.md ----"
head -n 60 RELEASE_NOTES.md
echo "--------------------------"
- name: Create export zip (Computing:Box Website.zip)
shell: bash
run: |
set -e
if [ ! -d "export" ]; then
echo "❌ export/ folder not found in repo root"
ls -la
exit 1
fi
rm -f "Computing:Box Website.zip"
(cd export && zip -r "../Computing:Box Website.zip" .)
test -s "Computing:Box Website.zip"
ls -lh "Computing:Box Website.zip"
- name: Prepare YY.MM.DD letter-suffix tag + release name
shell: bash
run: |
set -e
# Version: YY.MM.DD (UTC). Swap to `date +...` if you prefer UK-local runner time.
VERSION="$(date -u +'%y.%m.%d')"
PREFIX="v${VERSION}."
last_letter="$(
git tag --list "${PREFIX}[a-z]" \
| sed -E "s/^${PREFIX}([a-z])$/\1/" \
| sort \
| tail -n 1
)"
if [ -z "$last_letter" ]; then
next_letter="a"
else
if [ "$last_letter" = "z" ]; then
echo "❌ Already have v${VERSION}.z today. Refusing to create more than 26 releases/day."
exit 1
fi
next_letter="$(printf "%b" "$(printf '\\%03o' "$(( $(printf '%d' "'$last_letter") + 1 ))")")"
fi
TAG="${PREFIX}${next_letter}"
RELEASE_NAME="Computing:Box v${VERSION}.${next_letter}"
echo "TAG=$TAG" >> "$GITHUB_ENV"
echo "RELEASE_NAME=$RELEASE_NAME" >> "$GITHUB_ENV"
echo "ZIP_PATH=Computing:Box Website.zip" >> "$GITHUB_ENV"
echo "Using tag: $TAG"
echo "Release name: $RELEASE_NAME"
- name: Create and push tag (CHANGELOG_PAT)
shell: bash
env:
CHANGELOG_PAT: ${{ secrets.CHANGELOG_PAT }}
run: |
set -e
git tag -f "$TAG"
origin_url="$(git remote get-url origin)"
# Convert SSH origin to HTTPS if needed
if echo "$origin_url" | grep -q "^git@"; then
host="$(echo "$origin_url" | sed -E 's#git@([^:]+):.*#\1#')"
path="$(echo "$origin_url" | sed -E 's#git@[^:]+:(.*)#\1#')"
origin_url="https://$host/$path"
fi
authed_url="$(echo "$origin_url" | sed -E "s#^https://#https://oauth2:${CHANGELOG_PAT}@#")"
git push "$authed_url" "refs/tags/$TAG" --force
- name: Create Gitea release + upload asset (CHANGELOG_PAT)
shell: bash
env:
CHANGELOG_PAT: ${{ secrets.CHANGELOG_PAT }}
run: |
set -e
origin_url="$(git remote get-url origin)"
if echo "$origin_url" | grep -q "^git@"; then
host="$(echo "$origin_url" | sed -E 's#git@([^:]+):.*#\1#')"
path="$(echo "$origin_url" | sed -E 's#git@[^:]+:(.*)#\1#')"
origin_url="https://$host/$path"
fi
base="$(echo "$origin_url" | sed -E 's#(https?://[^/]+)/.*#\1#')"
repo_path="$(echo "$origin_url" | sed -E 's#https?://[^/]+/##')"
repo_path="$(echo "$repo_path" | sed -E 's/\.git$//')"
owner="$(echo "$repo_path" | cut -d/ -f1)"
repo="$(echo "$repo_path" | cut -d/ -f2-)"
api="$base/api/v1"
python3 - <<'PY'
import json, os
tag = os.environ["TAG"]
name = os.environ["RELEASE_NAME"]
with open("RELEASE_NOTES.md", "r", encoding="utf-8") as f:
body = f.read()
payload = {
"tag_name": tag,
"target_commitish": "main",
"name": name,
"body": body, # newest section only
"draft": False,
"prerelease": False,
}
with open("release.json", "w", encoding="utf-8") as f:
json.dump(payload, f)
PY
curl -sS -X POST \
-H "Authorization: Bearer ${CHANGELOG_PAT}" \
-H "Content-Type: application/json" \
"${api}/repos/${owner}/${repo}/releases" \
--data-binary @release.json \
-o release_response.json
release_id="$(python3 - <<'PY'
import json
with open("release_response.json","r",encoding="utf-8") as f:
data=json.load(f)
rid=data.get("id")
if not rid:
raise SystemExit("No release id returned. Response:\n" + json.dumps(data, indent=2))
print(rid)
PY
)"
echo "Created release id: $release_id"
curl -sS -X POST \
-H "Authorization: Bearer ${CHANGELOG_PAT}" \
"${api}/repos/${owner}/${repo}/releases/${release_id}/assets?name=Computing%3ABox%20Website.zip" \
-F "attachment=@${ZIP_PATH}" \
>/dev/null
echo "✅ Release created: ${RELEASE_NAME} (tag: ${TAG}) with asset uploaded"

558
LICENSE
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@@ -1,437 +1,121 @@
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Affirmer's Copyright and Related Rights and associated claims and causes
of action, whether now known or unknown (including existing as well as
future claims and causes of action), in the Work (i) in all territories
worldwide, (ii) for the maximum duration provided by applicable law or
treaty (including future time extensions), (iii) in any current or future
medium and for any number of copies, and (iv) for any purpose whatsoever,
including without limitation commercial, advertising or promotional
purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each
member of the public at large and to the detriment of Affirmer's heirs and
successors, fully intending that such Waiver shall not be subject to
revocation, rescission, cancellation, termination, or any other legal or
equitable action to disrupt the quiet enjoyment of the Work by the public
as contemplated by Affirmer's express Statement of Purpose.
3. Public License Fallback. Should any part of the Waiver for any reason
be judged legally invalid or ineffective under applicable law, then the
Waiver shall be preserved to the maximum extent permitted taking into
account Affirmer's express Statement of Purpose. In addition, to the
extent the Waiver is so judged Affirmer hereby grants to each affected
person a royalty-free, non transferable, non sublicensable, non exclusive,
irrevocable and unconditional license to exercise Affirmer's Copyright and
Related Rights in the Work (i) in all territories worldwide, (ii) for the
maximum duration provided by applicable law or treaty (including future
time extensions), (iii) in any current or future medium and for any number
of copies, and (iv) for any purpose whatsoever, including without
limitation commercial, advertising or promotional purposes (the
"License"). The License shall be deemed effective as of the date CC0 was
applied by Affirmer to the Work. Should any part of the License for any
reason be judged legally invalid or ineffective under applicable law, such
partial invalidity or ineffectiveness shall not invalidate the remainder
of the License, and in such case Affirmer hereby affirms that he or she
will not (i) exercise any of his or her remaining Copyright and Related
Rights in the Work or (ii) assert any associated claims and causes of
action with respect to the Work, in either case contrary to Affirmer's
express Statement of Purpose.
4. Limitations and Disclaimers.
a. No trademark or patent rights held by Affirmer are waived, abandoned,
surrendered, licensed or otherwise affected by this document.
b. Affirmer offers the Work as-is and makes no representations or
warranties of any kind concerning the Work, express, implied,
statutory or otherwise, including without limitation warranties of
title, merchantability, fitness for a particular purpose, non
infringement, or the absence of latent or other defects, accuracy, or
the present or absence of errors, whether or not discoverable, all to
the greatest extent permissible under applicable law.
c. Affirmer disclaims responsibility for clearing rights of other persons
that may apply to the Work or any use thereof, including without
limitation any person's Copyright and Related Rights in the Work.
Further, Affirmer disclaims responsibility for obtaining any necessary
consents, permissions or other rights required for any use of the
Work.
d. Affirmer understands and acknowledges that Creative Commons is not a
party to this document and has no duty or obligation with respect to
this CC0 or use of the Work.

View File

@@ -1,13 +1,7 @@
# Computing:Box
An evolution of Bit:Box & CS:Box to incorporate different elements of the UK Computing Curriculum
### Available at:
- [Personal Gitea Instance](https://git.adcmnetworks.co.uk/alexander.lyall/computing-box),
- [GitHub](https://github.com/MrLyallCSIT/Computing-Box)
- [The Official Computing:Box Website](https://www.computingbox.co.uk)
<img src="/assets/img/ComputingBox-Logo.png" alt="Computing:Box Logo" width="250px" height="250px"/>
![Computing:Box Logo](/assets/img/ComputingBox-Logo.png "Computing:Box Logo")
## Upcoming Features
### Original Bit:Box Features (October 2024)
@@ -36,15 +30,4 @@ An evolution of Bit:Box & CS:Box to incorporate different elements of the UK Com
- [ ] Computer Components Simulator
## Version 1.0 Release Date: 1<sup>st</sup> September 2025
## Version 2.0 Release Date (Goal): 1<sup>st</sup> April 2026
Shield: [![CC BY-NC-SA 4.0][cc-by-nc-sa-shield]][cc-by-nc-sa]
This work is licensed under a
[Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License][cc-by-nc-sa].
[![CC BY-NC-SA 4.0][cc-by-nc-sa-image]][cc-by-nc-sa]
[cc-by-nc-sa]: http://creativecommons.org/licenses/by-nc-sa/4.0/
[cc-by-nc-sa-image]: https://licensebuttons.net/l/by-nc-sa/4.0/88x31.png
[cc-by-nc-sa-shield]: https://img.shields.io/badge/License-CC%20BY--NC--SA%204.0-lightgrey.svg
## Version 2.0 Release Date (Goal): 1<sup>st</sup> February 2025

10
package-lock.json generated
View File

@@ -8,7 +8,7 @@
"name": "computing-box",
"version": "0.0.1",
"dependencies": {
"astro": "^5.16.6"
"astro": "^5.16.5"
}
},
"node_modules/@astrojs/compiler": {
@@ -1496,7 +1496,6 @@
"resolved": "https://registry.npmjs.org/@types/node/-/node-25.0.2.tgz",
"integrity": "sha512-gWEkeiyYE4vqjON/+Obqcoeffmk0NF15WSBwSs7zwVA2bAbTaE0SJ7P0WNGoJn8uE7fiaV5a7dKYIJriEqOrmA==",
"license": "MIT",
"peer": true,
"dependencies": {
"undici-types": "~7.16.0"
}
@@ -1650,9 +1649,9 @@
}
},
"node_modules/astro": {
"version": "5.16.6",
"resolved": "https://registry.npmjs.org/astro/-/astro-5.16.6.tgz",
"integrity": "sha512-6mF/YrvwwRxLTu+aMEa5pwzKUNl5ZetWbTyZCs9Um0F12HUmxUiF5UHiZPy4rifzU3gtpM3xP2DfdmkNX9eZRg==",
"version": "5.16.5",
"resolved": "https://registry.npmjs.org/astro/-/astro-5.16.5.tgz",
"integrity": "sha512-QeuM4xzTR0QuXFDNlGVW0BW7rcquKFIkylaPeM4ufii0/RRiPTYtwxDYVZ3KfiMRuuc+nbLD0214kMKTvz/yvQ==",
"license": "MIT",
"dependencies": {
"@astrojs/compiler": "^2.13.0",
@@ -4171,6 +4170,7 @@
"resolved": "https://registry.npmjs.org/rollup/-/rollup-4.53.3.tgz",
"integrity": "sha512-w8GmOxZfBmKknvdXU1sdM9NHcoQejwF/4mNgj2JuEEdRaHwwF12K7e9eXn1nLZ07ad+du76mkVsyeb2rKGllsA==",
"license": "MIT",
"peer": true,
"dependencies": {
"@types/estree": "1.0.8"
},

View File

@@ -1,7 +1,7 @@
{
"name": "computing-box",
"name": "Computing:Box",
"type": "module",
"version": "0.0.1",
"version": "2.0.0 Alpha",
"scripts": {
"dev": "astro dev",
"build": "astro build",
@@ -9,6 +9,6 @@
"astro": "astro"
},
"dependencies": {
"astro": "^5.16.6"
"astro": "^5.16.5"
}
}

View File

@@ -1,137 +0,0 @@
/* ---------- DSEG7 font ---------- */
/* Put your font file here:
public/fonts/DSEG7Classic-Regular.woff2
*/
@font-face {
font-family: "DSEG7ClassicRegular";
src: url("/fonts/DSEG7Classic-Regular.woff2") format("woff2");
font-display: swap;
}
/* ---------- Layout ---------- */
.tool-shell {
min-height: 100vh;
display: grid;
place-items: center;
padding: 1rem;
background: #0b0f14;
color: #e7eaf0;
font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
.tool-card {
width: min(1100px, 100%);
background: #111824;
border: 1px solid rgba(255,255,255,0.08);
border-radius: 18px;
padding: 1rem;
}
.tool-header h1 { margin: 0 0 .25rem 0; font-size: 1.4rem; }
.tool-header p { margin: 0 0 1rem 0; opacity: .85; }
.display-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: .75rem;
margin-bottom: .75rem;
}
.display-box {
background: #0b0f14;
border: 1px solid rgba(255,255,255,0.08);
border-radius: 14px;
padding: .75rem;
}
.display-label { font-size: .9rem; opacity: .8; margin-bottom: .25rem; }
.sevenseg {
font-family: "DSEG7ClassicRegular", monospace;
font-size: clamp(2rem, 4vw, 3.2rem);
letter-spacing: 0.08em;
line-height: 1.1;
}
/* Buttons under denary/binary (your request) */
.actions {
display: flex;
flex-wrap: wrap;
gap: .5rem;
margin-bottom: 1rem;
}
/* ---------- Simple MD3-ish buttons ---------- */
.md3-btn {
border: 1px solid rgba(255,255,255,0.16);
background: rgba(255,255,255,0.06);
color: #e7eaf0;
padding: .6rem .9rem;
border-radius: 999px;
cursor: pointer;
font-weight: 600;
}
.md3-btn:hover { background: rgba(255,255,255,0.10); }
.md3-btn--tonal { background: rgba(255,255,255,0.10); }
/* ---------- Switches row ---------- */
.switch-row {
display: grid;
grid-template-columns: repeat(8, minmax(90px, 1fr));
gap: .75rem;
}
.switch-col {
display: grid;
justify-items: center;
gap: .35rem;
}
.bit-label { opacity: .85; font-weight: 600; }
/* ---------- “Light switch” rocker ---------- */
.rocker {
position: relative;
width: 70px;
height: 46px;
display: inline-block;
user-select: none;
}
.rocker input {
opacity: 0;
width: 0;
height: 0;
}
.rocker-body {
position: absolute;
inset: 0;
border-radius: 12px;
background: #1a2331;
border: 1px solid rgba(255,255,255,0.14);
box-shadow: inset 0 0 0 2px rgba(0,0,0,0.35);
}
/* the “toggle” */
.rocker-body::after {
content: "";
position: absolute;
left: 6px;
top: 6px;
width: 58px;
height: 18px;
border-radius: 10px;
background: rgba(255,255,255,0.20);
transition: transform 180ms ease, background 180ms ease;
}
/* ON position */
.rocker input:checked + .rocker-body::after {
transform: translateY(16px);
background: rgba(255,255,255,0.55);
}
@media (max-width: 900px) {
.switch-row { grid-template-columns: repeat(4, minmax(90px, 1fr)); }
}

View File

@@ -1,9 +0,0 @@
<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 128 128">
<path d="M50.4 78.5a75.1 75.1 0 0 0-28.5 6.9l24.2-65.7c.7-2 1.9-3.2 3.4-3.2h29c1.5 0 2.7 1.2 3.4 3.2l24.2 65.7s-11.6-7-28.5-7L67 45.5c-.4-1.7-1.6-2.8-2.9-2.8-1.3 0-2.5 1.1-2.9 2.7L50.4 78.5Zm-1.1 28.2Zm-4.2-20.2c-2 6.6-.6 15.8 4.2 20.2a17.5 17.5 0 0 1 .2-.7 5.5 5.5 0 0 1 5.7-4.5c2.8.1 4.3 1.5 4.7 4.7.2 1.1.2 2.3.2 3.5v.4c0 2.7.7 5.2 2.2 7.4a13 13 0 0 0 5.7 4.9v-.3l-.2-.3c-1.8-5.6-.5-9.5 4.4-12.8l1.5-1a73 73 0 0 0 3.2-2.2 16 16 0 0 0 6.8-11.4c.3-2 .1-4-.6-6l-.8.6-1.6 1a37 37 0 0 1-22.4 2.7c-5-.7-9.7-2-13.2-6.2Z" />
<style>
path { fill: #000; }
@media (prefers-color-scheme: dark) {
path { fill: #FFF; }
}
</style>
</svg>

Before

Width:  |  Height:  |  Size: 749 B

View File

@@ -1,115 +0,0 @@
// Browser-only script. Safe because it's loaded via <script> (not server-imported).
const BIT_COUNT = 8; // unsigned page = 8 bits
const bitValues = [128, 64, 32, 16, 8, 4, 2, 1];
const elDenary = document.getElementById("denaryNumber");
const elBinary = document.getElementById("binaryNumber");
const elSwitches = document.getElementById("bitSwitches");
const btnCustomDenary = document.getElementById("btnCustomDenary");
const btnCustomBinary = document.getElementById("btnCustomBinary");
const btnReset = document.getElementById("btnReset");
let bits = new Array(BIT_COUNT).fill(false);
function renderSwitches() {
elSwitches.innerHTML = "";
bitValues.forEach((value, index) => {
const id = `bit-${value}`;
const wrapper = document.createElement("div");
wrapper.className = "switch-col";
const labelTop = document.createElement("div");
labelTop.className = "bit-label";
labelTop.textContent = value;
const label = document.createElement("label");
label.className = "rocker";
label.setAttribute("for", id);
const input = document.createElement("input");
input.type = "checkbox";
input.id = id;
input.checked = bits[index];
input.addEventListener("change", () => {
bits[index] = input.checked;
updateNumbers();
});
const span = document.createElement("span");
span.className = "rocker-body";
span.setAttribute("aria-hidden", "true");
label.appendChild(input);
label.appendChild(span);
wrapper.appendChild(labelTop);
wrapper.appendChild(label);
elSwitches.appendChild(wrapper);
});
}
function updateNumbers() {
const binary = bits.map(b => (b ? "1" : "0")).join("");
const denary = bits.reduce((acc, b, i) => acc + (b ? bitValues[i] : 0), 0);
elBinary.textContent = binary;
elDenary.textContent = denary.toString();
}
function resetAll() {
bits = new Array(BIT_COUNT).fill(false);
renderSwitches();
updateNumbers();
}
function requestCustomDenary() {
let input = prompt(`Enter a denary number (0 to 255):`);
if (input === null) return;
const n = Number.parseInt(input, 10);
if (Number.isNaN(n) || n < 0 || n > 255) {
alert("Invalid input. Enter a number from 0 to 255.");
return;
}
let remaining = n;
bits = bitValues.map(v => {
if (remaining >= v) {
remaining -= v;
return true;
}
return false;
});
renderSwitches();
updateNumbers();
}
function requestCustomBinary() {
let input = prompt(`Enter an ${BIT_COUNT}-bit binary number (e.g. 01010101):`);
if (input === null) return;
input = input.trim();
const re = new RegExp(`^[01]{${BIT_COUNT}}$`);
if (!re.test(input)) {
alert(`Invalid input. Enter exactly ${BIT_COUNT} digits using only 0 or 1.`);
return;
}
bits = input.split("").map(c => c === "1");
renderSwitches();
updateNumbers();
}
btnCustomDenary?.addEventListener("click", requestCustomDenary);
btnCustomBinary?.addEventListener("click", requestCustomBinary);
btnReset?.addEventListener("click", resetAll);
renderSwitches();
updateNumbers();

View File

@@ -1,72 +0,0 @@
// public/js/tools/unsigned-binary.js
// Lightweight: no frameworks. Works on weak devices.
const BIT_COUNT = 8;
const MAX_DENARY = 255;
let bits = new Array(BIT_COUNT).fill(false);
function bitsToBinaryString(){
return bits.map(b => (b ? "1" : "0")).join("");
}
function bitsToDenary(){
// MSB on the left: 128..1
const weights = [128,64,32,16,8,4,2,1];
return bits.reduce((acc, b, i) => acc + (b ? weights[i] : 0), 0);
}
function render(){
const grid = document.getElementById("bitGrid");
grid.innerHTML = "";
const weights = [128,64,32,16,8,4,2,1];
bits.forEach((on, i) => {
const btn = document.createElement("button");
btn.type = "button";
btn.className = "btn";
btn.style.width = "100%";
btn.style.justifyContent = "space-between";
btn.setAttribute("aria-pressed", on ? "true" : "false");
btn.innerHTML = `<span>${weights[i]}</span><b>${on ? "1" : "0"}</b>`;
btn.addEventListener("click", () => {
bits[i] = !bits[i];
update();
});
grid.appendChild(btn);
});
}
function update(){
document.getElementById("binaryNumber").innerText = bitsToBinaryString();
document.getElementById("denaryNumber").innerText = bitsToDenary();
render();
}
function requestBinary(){
let v;
do{
v = prompt("Enter an 8-bit binary value (8 digits, only 0 or 1):", bitsToBinaryString());
if(v === null) return;
v = v.trim();
}while(!/^[01]{8}$/.test(v));
bits = v.split("").map(ch => ch === "1");
update();
}
function requestDenary(){
let v;
do{
v = prompt("Enter a denary value (0 to 255):", String(bitsToDenary()));
if(v === null) return;
v = Number(v);
}while(!Number.isInteger(v) || v < 0 || v > MAX_DENARY);
// set bits from MSB to LSB
const weights = [128,64,32,16,8,4,2,1];
bits = weights.map(w => {
if(v >= w){ v -= w; return true; }
return false;
});
update();
}
function reset(){
bits = new Array(BIT_COUNT).fill(false);
update();
}
document.addEventListener("DOMContentLoaded", () => {
document.getElementById("btnCustomBinary")?.addEventListener("click", requestBinary);
document.getElementById("btnCustomDenary")?.addEventListener("click", requestDenary);
document.getElementById("btnReset")?.addEventListener("click", reset);
update();
});

View File

@@ -1,96 +0,0 @@
/* src/styles/md3-tokens.css */
/* MD3-inspired tokens tuned for education: high readability, clear contrast, calm surfaces */
:root{
/* Typography */
--font-sans: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
--font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
/* Spacing + shape */
--radius-1: 10px;
--radius-2: 16px;
--radius-3: 22px;
--shadow-1: 0 1px 2px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.06);
/* Color roles (keep simple) */
--md-surface: #ffffff;
--md-surface-2: #f6f7fb;
--md-on-surface: #111318;
--md-primary: #2f6fed; /* calm blue */
--md-on-primary: #ffffff;
--md-secondary: #5a5f72; /* muted */
--md-on-secondary: #ffffff;
--md-tertiary: #0f766e; /* teal for "practical" tools */
--md-on-tertiary: #ffffff;
--md-outline: #d7dbe7;
--md-success: #1a7f37;
--md-warning: #b54708;
--md-danger: #b42318;
/* Focus ring for accessibility */
--md-focus: 0 0 0 3px rgba(47,111,237,.28);
}
@media (prefers-color-scheme: dark){
:root{
--md-surface: #0b0e14;
--md-surface-2: #121725;
--md-on-surface: #e8eaf2;
--md-primary: #9bb6ff;
--md-on-primary: #0b0e14;
--md-secondary: #b8bccd;
--md-on-secondary: #0b0e14;
--md-tertiary: #4fd1c5;
--md-on-tertiary: #0b0e14;
--md-outline: #2b3244;
--md-focus: 0 0 0 3px rgba(155,182,255,.25);
}
}
/* src/styles/base.css */
@import "./md3-tokens.css";
html, body{ height:100%; }
body{
margin:0;
font-family: var(--font-sans);
background: var(--md-surface-2);
color: var(--md-on-surface);
}
a{ color: var(--md-primary); text-decoration: none; }
a:hover{ text-decoration: underline; }
.container{
max-width: 1100px;
margin: 0 auto;
padding: 16px;
}
.card{
background: var(--md-surface);
border: 1px solid var(--md-outline);
border-radius: var(--radius-2);
box-shadow: var(--shadow-1);
padding: 16px;
}
.btn{
display:inline-flex;
gap:8px;
align-items:center;
justify-content:center;
border-radius: 999px;
border: 1px solid var(--md-outline);
background: var(--md-surface);
color: var(--md-on-surface);
padding: 10px 14px;
font-weight: 600;
cursor: pointer;
}
.btn:hover{ filter: brightness(0.98); }
.btn:focus{ outline:none; box-shadow: var(--md-focus); }
.btn-primary{
background: var(--md-primary);
color: var(--md-on-primary);
border-color: transparent;
}
.badge{
display:inline-block;
padding: 2px 10px;
border-radius: 999px;
font-size: 12px;
border: 1px solid var(--md-outline);
background: var(--md-surface-2);
}
code, pre{ font-family: var(--font-mono); }

View File

@@ -0,0 +1,29 @@
<footer class="siteFooter">
<div class="inner">
<div class="title">Computer Science Concept Simulators</div>
<div class="meta">
© 2025 Computing:Box · Created with 💗 by Mr Lyall<br />
Powered by ADCM Networks
</div>
</div>
</footer>
<style>
.siteFooter{
border-top: 1px solid rgba(255,255,255,.10);
background: rgba(0,0,0,.10);
}
.inner{
max-width:1200px;
margin:0 auto;
padding: 18px 20px;
color: rgba(255,255,255,.65);
font-size: 12px;
line-height: 1.6;
}
.title{
color: rgba(255,255,255,.80);
font-weight: 800;
margin-bottom: 6px;
}
</style>

View File

@@ -0,0 +1,57 @@
<header class="siteHeader">
<div class="inner">
<div class="brand">
<a href="/">Computing:Box</a>
</div>
<nav class="nav">
<a href="/binary">Binary</a>
<a href="/hexadecimal">Hexadecimal</a>
<a href="/hex-colours">Hex Colours</a>
<a href="/logic-gates">Logic Gates</a>
<a href="/about">About</a>
</nav>
</div>
</header>
<style>
.siteHeader{
height: 64px;
display:flex;
align-items:center;
border-bottom: 1px solid rgba(255,255,255,.10);
background: rgba(0,0,0,.10);
backdrop-filter: blur(8px);
}
.inner{
max-width: 1200px;
width: 100%;
margin: 0 auto;
padding: 0 20px;
display:flex;
align-items:center;
justify-content: space-between;
gap: 18px;
}
.brand a{
color:#fff;
text-decoration:none;
font-weight: 800;
letter-spacing: .02em;
}
.nav{
display:flex;
gap: 16px;
flex-wrap: wrap;
}
.nav a{
color: rgba(255,255,255,.78);
text-decoration:none;
font-weight: 700;
font-size: 13px;
letter-spacing:.02em;
}
.nav a:hover{
color:#fff;
}
</style>

View File

@@ -1,381 +0,0 @@
---
const { mode = "unsigned", defaultBits = 8 } = Astro.props;
// For unsigned: min 1 bit, max 16 bits (tweak if you want)
const minBits = 4;
const maxBits = 16;
const initialBits = Math.min(Math.max(defaultBits, minBits), maxBits);
---
<section class="binary-sim" data-mode={mode} data-bits={initialBits}>
<div class="top">
<div class="left-brand">
<!-- Replace with your logo/img -->
<div class="brand-box" aria-hidden="true">Computing:Box</div>
</div>
<div class="display" aria-live="polite">
<div class="label">DENARY</div>
<div id="denaryNumber" class="value">0</div>
<div class="label">BINARY</div>
<div id="binaryNumber" class="value mono">00000000</div>
</div>
<div class="actions">
<button class="btn" type="button" data-action="custom-binary">Custom Binary</button>
<button class="btn" type="button" data-action="custom-denary">Custom Denary</button>
<button class="btn" type="button" data-action="shift-left">Left Shift</button>
<button class="btn" type="button" data-action="shift-right">Right Shift</button>
<div class="bits-control">
<div class="bits-title">Bits</div>
<div class="bits-buttons">
<button class="btn small" type="button" data-action="bits-minus" aria-label="Decrease bits"></button>
<span id="bitsCount" class="bits-count">{initialBits}</span>
<button class="btn small" type="button" data-action="bits-plus" aria-label="Increase bits">+</button>
</div>
</div>
</div>
</div>
<div id="bitsRow" class="bits-row" aria-label="Binary bit switches"></div>
</section>
<script is:inline>
(() => {
const root = document.currentScript.closest(".binary-sim");
const bitsRow = root.querySelector("#bitsRow");
const binaryEl = root.querySelector("#binaryNumber");
const denaryEl = root.querySelector("#denaryNumber");
const bitsCountEl = root.querySelector("#bitsCount");
let bitCount = parseInt(root.dataset.bits || "8", 10);
const minBits = 4;
const maxBits = 16;
// state: array of 0/1, MSB at index 0
let bits = new Array(bitCount).fill(0);
function placeValues(n) {
// unsigned place values: [2^(n-1), ..., 2^0]
return Array.from({ length: n }, (_, i) => 2 ** (n - 1 - i));
}
function bitsToDenary(bitsArr) {
const pv = placeValues(bitsArr.length);
return bitsArr.reduce((acc, b, i) => acc + (b ? pv[i] : 0), 0);
}
function render() {
const binaryStr = bits.join("");
binaryEl.textContent = binaryStr;
denaryEl.textContent = String(bitsToDenary(bits));
bitsCountEl.textContent = String(bitCount);
const pv = placeValues(bitCount);
bitsRow.innerHTML = pv.map((value, i) => {
const id = `bit_${bitCount}_${i}`;
const checked = bits[i] === 1 ? "checked" : "";
return `
<div class="bit-col">
<div class="bulb ${bits[i] ? "on" : "off"}" aria-hidden="true"></div>
<div class="place">${value}</div>
<label class="switch" for="${id}">
<input id="${id}" type="checkbox" ${checked} data-index="${i}">
<span class="slider" aria-hidden="true"></span>
<span class="sr-only">Toggle bit value ${value}</span>
</label>
</div>
`;
}).join("");
}
function setBitsFromBinaryString(str) {
// allow shorter input; pad left
const clean = (str || "").trim();
if (!/^[01]+$/.test(clean) || clean.length > bitCount) return false;
const padded = clean.padStart(bitCount, "0");
bits = padded.split("").map(c => c === "1" ? 1 : 0);
return true;
}
function setBitsFromDenary(num) {
if (!Number.isInteger(num)) return false;
const max = (2 ** bitCount) - 1;
if (num < 0 || num > max) return false;
const bin = num.toString(2).padStart(bitCount, "0");
bits = bin.split("").map(c => c === "1" ? 1 : 0);
return true;
}
function shiftLeft() {
bits = bits.slice(1).concat(0);
}
function shiftRight() {
bits = [0].concat(bits.slice(0, -1));
}
function resizeBits(newCount) {
const clamped = Math.max(minBits, Math.min(maxBits, newCount));
if (clamped === bitCount) return;
// keep value as best as possible: preserve LSBs when resizing
const currentBinary = bits.join("");
bitCount = clamped;
bits = new Array(bitCount).fill(0);
const take = currentBinary.slice(-bitCount);
setBitsFromBinaryString(take);
}
// Switch input handler
bitsRow.addEventListener("change", (e) => {
const input = e.target;
if (!(input instanceof HTMLInputElement)) return;
const idx = parseInt(input.dataset.index || "-1", 10);
if (idx < 0) return;
bits[idx] = input.checked ? 1 : 0;
render();
});
// Button actions
root.querySelector(".actions").addEventListener("click", (e) => {
const btn = e.target.closest("button[data-action]");
if (!btn) return;
const action = btn.dataset.action;
if (action === "custom-binary") {
const entered = prompt(`Enter a ${bitCount}-bit binary value (0s and 1s):`, bits.join(""));
if (entered === null) return;
if (!setBitsFromBinaryString(entered)) {
alert(`Invalid binary. Use only 0 and 1, up to ${bitCount} digits.`);
return;
}
render();
}
if (action === "custom-denary") {
const max = (2 ** bitCount) - 1;
const entered = prompt(`Enter a denary value (0 to ${max}):`, String(bitsToDenary(bits)));
if (entered === null) return;
const num = Number.parseInt(entered, 10);
if (!setBitsFromDenary(num)) {
alert(`Invalid denary. Enter a whole number from 0 to ${max}.`);
return;
}
render();
}
if (action === "shift-left") { shiftLeft(); render(); }
if (action === "shift-right") { shiftRight(); render(); }
if (action === "bits-minus") { resizeBits(bitCount - 1); render(); }
if (action === "bits-plus") { resizeBits(bitCount + 1); render(); }
});
// initial
render();
})();
</script>
<style>
/* Layout */
.binary-sim {
padding: 2rem 1rem 3rem;
}
.top {
display: grid;
grid-template-columns: 260px 1fr 220px;
gap: 1.5rem;
align-items: start;
}
@media (max-width: 980px) {
.top {
grid-template-columns: 1fr;
}
.actions {
display: grid;
grid-template-columns: 1fr 1fr;
}
}
/* Brand placeholder */
.brand-box {
width: 180px;
height: 180px;
border-radius: 12px;
display: grid;
place-items: center;
font-weight: 700;
opacity: 0.9;
border: 1px solid rgba(255,255,255,0.08);
background: rgba(255,255,255,0.04);
}
/* Display */
.display {
text-align: center;
padding: 1rem;
}
.label {
letter-spacing: 0.12em;
opacity: 0.85;
margin-top: 0.5rem;
}
.value {
font-size: 3rem;
line-height: 1.1;
margin: 0.25rem 0 0.75rem;
font-weight: 700;
}
.mono {
font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}
/* Buttons */
.actions {
display: flex;
flex-direction: column;
gap: 0.75rem;
}
.btn {
border: 0;
border-radius: 10px;
padding: 0.75rem 1rem;
font-weight: 600;
cursor: pointer;
background: rgba(255,255,255,0.08);
color: inherit;
}
.btn:hover { background: rgba(255,255,255,0.12); }
.btn.small {
padding: 0.45rem 0.75rem;
border-radius: 10px;
}
.bits-control {
margin-top: 0.25rem;
padding-top: 0.5rem;
border-top: 1px solid rgba(255,255,255,0.08);
}
.bits-title { opacity: 0.8; margin-bottom: 0.35rem; }
.bits-buttons {
display: flex;
align-items: center;
gap: 0.5rem;
}
.bits-count {
min-width: 2ch;
text-align: center;
font-weight: 700;
}
/* Bits row */
.bits-row {
margin-top: 2rem;
display: grid;
grid-template-columns: repeat(auto-fit, minmax(88px, 1fr));
gap: 1.25rem;
align-items: end;
}
.bit-col {
text-align: center;
padding: 0.5rem 0.25rem;
}
.place {
margin: 0.5rem 0 0.5rem;
font-size: 2rem;
font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}
/* Bulb */
.bulb {
width: 26px;
height: 26px;
margin: 0 auto 0.25rem;
border-radius: 50%;
border: 1px solid rgba(255,255,255,0.15);
}
.bulb.off { opacity: 0.15; }
.bulb.on { opacity: 1; }
/* Light switch (accessible checkbox) */
.switch {
display: inline-flex;
align-items: center;
justify-content: center;
width: 64px;
height: 36px;
position: relative;
}
.switch input {
position: absolute;
opacity: 0;
width: 1px;
height: 1px;
}
.slider {
width: 64px;
height: 36px;
border-radius: 999px;
background: rgba(255,255,255,0.10);
border: 1px solid rgba(255,255,255,0.14);
position: relative;
transition: transform 120ms ease, background 120ms ease;
}
.slider::after {
content: "";
position: absolute;
top: 4px;
left: 4px;
width: 28px;
height: 28px;
border-radius: 999px;
background: rgba(255,255,255,0.85);
transition: transform 120ms ease;
}
.switch input:checked + .slider {
background: rgba(255,255,255,0.18);
}
.switch input:checked + .slider::after {
transform: translateX(28px);
}
/* focus */
.switch input:focus-visible + .slider {
outline: 3px solid rgba(255,255,255,0.35);
outline-offset: 2px;
}
.sr-only {
position: absolute;
width: 1px; height: 1px;
padding: 0; margin: -1px;
overflow: hidden; clip: rect(0,0,0,0);
white-space: nowrap; border: 0;
}
</style>

View File

@@ -1,17 +1,41 @@
---
// src/layouts/BaseLayout.astro
const { title = "Computing:Box" } = Astro.props;
---
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<title>{title}</title>
<link rel="stylesheet" href="/styles.css" />
<link rel="stylesheet" href="/fonts/DSEG7Classic-Regular.css">
<link rel="stylesheet" href="/src/styles/site.css" />
</head>
<body>
<header class="site-header">
<div class="site-header__inner">
<div class="brand">Computing:Box</div>
<nav class="nav">
<a class="nav__link" href="/binary">Binary</a>
<a class="nav__link" href="/hexadecimal">Hexadecimal</a>
<a class="nav__link" href="/hex-colours">Hex Colours</a>
<a class="nav__link" href="/logic-gates">Logic Gates</a>
<a class="nav__link" href="/about">About</a>
</nav>
</div>
</header>
<main class="site-main">
<slot />
</main>
<footer class="site-footer">
<div class="site-footer__inner">
<div>Computer Science Concept Simulators</div>
<div>© 2025 Computing:Box · Created with 💜 by Mr Lyall</div>
<div>Powered by ADCM Networks</div>
</div>
</footer>
</body>
</html>

View File

@@ -1,642 +1,106 @@
---
/**
* src/pages/binary.astro
* Single-file binary simulator (Unsigned + Two's complement)
* Bit width: 4..64
*
* Requires:
* public/fonts/DSEG7Classic-Regular.woff
* public/fonts/DSEG7Classic-Regular.ttf
*/
import BaseLayout from "../layouts/BaseLayout.astro";
import "../styles/binary.css";
// ✅ Correct Astro v5 way: bundle script from src/ and get its final URL
import binaryScriptUrl from "../scripts/binary.js?url";
---
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1" />
<title>Binary | Computing:Box</title>
<style>
:root{
--bg: #1f2027;
--panel: #22242d;
--panel2:#262833;
--text: #e8e8ee;
--muted: #a9acb8;
--accent: #33ff7a;
--accent-dim: rgba(51,255,122,.15);
--line: rgba(255,255,255,.12);
}
@font-face{
font-family: "DSEG7ClassicRegular";
src:
url("/fonts/DSEG7Classic-Regular.woff") format("woff"),
url("/fonts/DSEG7Classic-Regular.ttf") format("truetype");
font-weight: 400;
font-style: normal;
font-display: swap;
}
body{
margin:0;
font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
background: var(--bg);
color: var(--text);
}
.wrap{
max-width: 1200px;
margin: 0 auto;
padding: 32px 20px 60px;
}
/* Layout: readout left, settings panel right (like your screenshot) */
.layout{
display:grid;
grid-template-columns: 1fr 360px;
gap: 22px;
align-items:start;
}
.readout{
text-align:center;
padding: 10px 10px 0;
}
.label{
letter-spacing: .18em;
font-weight: 700;
color: var(--muted);
text-transform: uppercase;
font-size: 16px;
margin-top: 8px;
}
.num{
font-family: "DSEG7ClassicRegular", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
font-weight: 400;
color: var(--accent);
text-shadow: 0 0 18px var(--accent-dim);
}
.value{
font-size: 70px;
line-height: 1.0;
margin: 6px 0 16px;
}
.binary{
font-size: 54px;
letter-spacing: .12em;
word-break: break-all;
}
/* Buttons under readout (as requested) */
.controls{
margin-top: 16px;
display:flex;
gap: 12px;
justify-content:center;
flex-wrap:wrap;
}
.btn{
background: rgba(255,255,255,.06);
border: 1px solid rgba(255,255,255,.14);
color: #fff;
padding: 12px 14px;
border-radius: 12px;
font-weight: 700;
cursor: pointer;
min-width: 160px;
}
.btn:active{ transform: translateY(1px); }
/* Settings panel cards */
.panel{
background: rgba(255,255,255,.04);
border: 1px solid rgba(255,255,255,.10);
border-radius: 14px;
padding: 16px 16px 14px;
margin-bottom: 14px;
}
.panelTitle{
font-size: 12px;
letter-spacing: .16em;
text-transform: uppercase;
color: var(--muted);
font-weight: 800;
margin-bottom: 10px;
}
.panelRow{
display:flex;
align-items:center;
justify-content:space-between;
gap: 12px;
}
.hint{
color: var(--muted);
font-size: 12px;
margin-top: 10px;
line-height: 1.35;
}
/* Reusable toggle switch (for MODE and for each BIT) */
.switch{
position: relative;
width: 56px;
height: 34px;
display:inline-block;
flex: 0 0 auto;
}
.switch input{
opacity:0;
width:0;
height:0;
}
.slider{
position:absolute;
inset:0;
background: rgba(255,255,255,.10);
border: 1px solid rgba(255,255,255,.14);
border-radius: 999px;
transition: .18s ease;
}
.slider::before{
content:"";
position:absolute;
height: 28px;
width: 28px;
left: 3px;
top: 2px;
background: rgba(255,255,255,.92);
border-radius: 50%;
transition: .18s ease;
}
.switch input:checked + .slider{
background: rgba(51,255,122,.20);
border-color: rgba(51,255,122,.55);
}
.switch input:checked + .slider::before{
transform: translateX(22px);
background: var(--accent);
}
/* Bit width controls */
.bwControls{
display:grid;
grid-template-columns: 44px 1fr 44px;
gap: 10px;
align-items:center;
margin-top: 8px;
}
.bwBtn{
width: 44px;
height: 44px;
border-radius: 12px;
border: 1px solid rgba(255,255,255,.14);
background: rgba(255,255,255,.06);
color: #fff;
font-weight: 900;
cursor: pointer;
}
.bwBtn:active{ transform: translateY(1px); }
.bwInput{
display:flex;
align-items:center;
justify-content:space-between;
gap: 12px;
background: rgba(255,255,255,.05);
border: 1px solid rgba(255,255,255,.12);
border-radius: 12px;
padding: 10px 12px;
}
.bwLabel{
color: var(--muted);
font-size: 12px;
letter-spacing: .14em;
text-transform: uppercase;
font-weight: 800;
}
.bwField{
width: 100px;
text-align:right;
background: transparent;
border: none;
outline: none;
color: var(--accent);
font-family: "DSEG7ClassicRegular", ui-monospace, monospace;
font-size: 26px;
padding: 0;
}
.bwField::-webkit-outer-spin-button,
.bwField::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.bwField[type=number] { -moz-appearance: textfield; }
/* Bits grid */
.bits{
margin-top: 34px;
padding-top: 26px;
border-top: 1px solid var(--line);
display:grid;
gap: 18px;
align-items:end;
text-align:center;
}
.bit{
display:flex;
flex-direction:column;
align-items:center;
gap: 10px;
padding: 8px 4px;
}
.bitVal{
font-size: 34px;
color: var(--text);
opacity: .95;
}
/* Bulb (must come back!) */
.bulb{
width: 22px;
height: 22px;
border-radius: 50%;
background: rgba(255,255,255,.08);
border: 1px solid rgba(255,255,255,.12);
box-shadow: none;
margin-bottom: 6px;
}
.bulb.on{
background: #ffd86b;
border-color: rgba(255,216,107,.7);
box-shadow: 0 0 18px rgba(255,216,107,.6);
}
/* Responsive */
@media (max-width: 1000px){
.layout{ grid-template-columns: 1fr; }
.value{ font-size: 60px; }
.binary{ font-size: 44px; }
}
@media (max-width: 900px){
.value{ font-size: 54px; }
.binary{ font-size: 36px; }
.btn{ min-width: 140px; }
}
</style>
</head>
<body>
<main class="wrap">
<section class="layout">
<!-- LEFT: readout + buttons -->
<BaseLayout title="Binary | Computing:Box">
<section class="binary-wrap">
<div class="topGrid">
<!-- LEFT: readout + main buttons -->
<div>
<div class="readout">
<div class="label">Denary</div>
<div id="denaryNumber" class="value num">0</div>
<div id="denaryNumber" class="num denary">0</div>
<div class="label">Binary</div>
<div id="binaryNumber" class="value binary num">00000000</div>
<pre id="binaryNumber" class="num binary" aria-label="Binary value">0</pre>
<div class="controls">
<button class="btn" id="btnCustomBinary" type="button">Custom Binary</button>
<button class="btn" id="btnCustomDenary" type="button">Custom Denary</button>
<!-- ORANGE: custom + shifts on separate lines -->
<div class="controls controls--twoRows">
<div class="controlsRow">
<button class="btn btn--green" id="btnCustomBinary" type="button">Custom Binary</button>
<button class="btn btn--green" id="btnCustomDenary" type="button">Custom Denary</button>
</div>
<div class="controlsRow">
<button class="btn" id="btnShiftLeft" type="button">Left Shift</button>
<button class="btn" id="btnShiftRight" type="button">Right Shift</button>
</div>
</div>
<!-- Bits grid (built by JS so bit-width 4..64 works) -->
<section id="bitsGrid" class="bits" aria-label="Bit switches"></section>
</div>
<!-- RIGHT: settings panel -->
<aside>
<div class="panel">
<div class="panelTitle">Mode</div>
<div class="panelRow">
<span style="font-weight:800;">Unsigned</span>
<div class="divider"></div>
<!-- MODE TOGGLE uses SAME switch style -->
<label class="switch" aria-label="Toggle Two's complement mode">
<!-- Bits render here -->
<section class="bits" id="bitsGrid" aria-label="Bit switches"></section>
</div>
<!-- RIGHT: red buttons go above/below this panel (not in the middle) -->
<aside class="panelCol">
<div class="card">
<div class="cardTitle">Mode</div>
<div class="toggleRow">
<div class="toggleLabel" id="lblUnsigned">Unsigned</div>
<label class="switch" aria-label="Toggle mode">
<input id="modeToggle" type="checkbox" />
<span class="slider"></span>
</label>
<span style="font-weight:800;">Twos complement</span>
<div class="toggleLabel" id="lblTwos">Two&apos;s complement</div>
</div>
<div class="hint" id="modeHint">
Tip: In unsigned binary, all bits represent positive values.
</div>
</div>
<!-- RED: extra buttons ABOVE bit width -->
<div class="card">
<div class="cardTitle">Tools</div>
<div class="toolsGrid">
<button class="btn" id="btnClear" type="button">Clear</button>
<button class="btn btn--spin" id="btnMinus1" type="button">1</button>
<button class="btn btn--spin" id="btnPlus1" type="button">+1</button>
<button class="btn" id="btnAutoRandom" type="button">Auto Random</button>
</div>
<div class="hint">
Tip: In twos complement, the left-most bit (MSB) represents a negative value.
Auto Random runs briefly then stops automatically.
</div>
</div>
<div class="panel">
<div class="panelTitle">Bit width</div>
<div class="card">
<div class="cardTitle">Bit width</div>
<div class="bwControls">
<button class="bwBtn" id="btnBitsDown" type="button" aria-label="Decrease bits"></button>
<div class="bitWidthRow">
<button class="miniBtn" id="btnBitsDown" type="button" aria-label="Decrease bits"></button>
<div class="bwInput">
<div class="bwLabel">Bits</div>
<div class="bitInputWrap">
<div class="bitInputLabel">Bits</div>
<input
id="bitsField"
class="bwField"
id="bitsInput"
class="bitInput"
type="number"
min="4"
inputmode="numeric"
min="1"
max="64"
step="1"
value="8"
inputmode="numeric"
aria-label="Number of bits"
/>
</div>
<button class="bwBtn" id="btnBitsUp" type="button" aria-label="Increase bits">+</button>
<button class="miniBtn" id="btnBitsUp" type="button" aria-label="Increase bits">+</button>
</div>
<div class="hint">
Minimum 4 bits, maximum 64 bits.
</div>
<div class="hint">Minimum 1 bit, maximum 64 bits.</div>
</div>
</aside>
</div>
<script type="module" src={binaryScriptUrl}></script>
</section>
</main>
<script type="module">
// ---------- State ----------
let bitsCount = 8; // 4..64
let isTwos = false; // false = unsigned
let bitStates = []; // MSB -> LSB booleans
// ---------- Helpers ----------
function clamp(n, min, max){ return Math.min(max, Math.max(min, n)); }
function pow2(n){
// for up to 64 bits, Number is still OK for *visual simulator*.
// if you later want exact 64-bit maths, swap to BigInt end-to-end.
return 2 ** n;
}
function getPlaceValues(){
// MSB -> LSB
// Unsigned: [2^(n-1), ..., 1]
// Two's: [-2^(n-1), 2^(n-2), ..., 1]
const vals = [];
for (let i = 0; i < bitsCount; i++){
const power = bitsCount - 1 - i;
if (isTwos && i === 0){
vals.push(-pow2(power));
} else {
vals.push(pow2(power));
}
}
return vals;
}
function binaryString(){
return bitStates.map(b => (b ? "1" : "0")).join("");
}
function denaryValue(){
const values = getPlaceValues();
let sum = 0;
for (let i = 0; i < bitsCount; i++){
if (bitStates[i]) sum += values[i];
}
return sum;
}
function rangeForMode(){
if (!isTwos){
return { min: 0, max: pow2(bitsCount) - 1 };
}
return { min: -pow2(bitsCount - 1), max: pow2(bitsCount - 1) - 1 };
}
function updateReadout(){
document.getElementById("binaryNumber").innerText = binaryString();
document.getElementById("denaryNumber").innerText = String(denaryValue());
// bulb on/off updates:
for (let i = 0; i < bitsCount; i++){
const bulb = document.getElementById(`bulb-${i}`);
if (bulb) bulb.classList.toggle("on", !!bitStates[i]);
}
}
// ---------- DOM build for bits grid ----------
function setBitsGridColumns(){
const grid = document.getElementById("bitsGrid");
// make it adapt (up to 16 per row max, then wraps)
const cols = clamp(bitsCount, 4, 16);
grid.style.gridTemplateColumns = `repeat(${cols}, 1fr)`;
}
function buildBitsGrid(){
const grid = document.getElementById("bitsGrid");
grid.innerHTML = "";
setBitsGridColumns();
const values = getPlaceValues();
for (let i = 0; i < bitsCount; i++){
const v = values[i];
const bit = document.createElement("div");
bit.className = "bit";
const bulb = document.createElement("div");
bulb.className = "bulb";
bulb.id = `bulb-${i}`;
bulb.setAttribute("aria-hidden", "true");
const val = document.createElement("div");
val.className = "bitVal num";
// show absolute label for MSB in twos? No — show the actual negative value (clear to students).
val.textContent = String(v);
// IMPORTANT: bit switch must be the SAME style as MODE switch
const label = document.createElement("label");
label.className = "switch";
label.setAttribute("aria-label", `Toggle bit ${v}`);
const input = document.createElement("input");
input.type = "checkbox";
input.dataset.index = String(i);
input.checked = !!bitStates[i];
const slider = document.createElement("span");
slider.className = "slider";
input.addEventListener("change", () => {
bitStates[i] = input.checked;
updateReadout();
});
label.appendChild(input);
label.appendChild(slider);
bit.appendChild(bulb);
bit.appendChild(val);
bit.appendChild(label);
grid.appendChild(bit);
}
updateReadout();
}
// ---------- Set state from binary / denary ----------
function setFromBinary(bin){
const clean = String(bin).replace(/\s+/g, "");
if (!/^[01]+$/.test(clean)) return false;
const padded = clean.slice(-bitsCount).padStart(bitsCount, "0");
bitStates = [...padded].map(ch => ch === "1");
// update toggles without rebuilding
for (let i = 0; i < bitsCount; i++){
const toggle = document.querySelector(`input[type="checkbox"][data-index="${i}"]`);
if (toggle) toggle.checked = bitStates[i];
}
updateReadout();
return true;
}
function setFromDenary(n){
const num = Number(n);
if (!Number.isInteger(num)) return false;
const { min, max } = rangeForMode();
if (num < min || num > max) return false;
// convert to bit pattern
let unsignedVal;
if (!isTwos){
unsignedVal = num;
} else {
// two's complement representation
unsignedVal = num < 0 ? (pow2(bitsCount) + num) : num;
}
// build MSB->LSB bits from unsignedVal
const newBits = [];
for (let i = 0; i < bitsCount; i++){
const power = bitsCount - 1 - i;
const bit = Math.floor(unsignedVal / pow2(power)) % 2;
newBits.push(bit === 1);
}
bitStates = newBits;
for (let i = 0; i < bitsCount; i++){
const toggle = document.querySelector(`input[type="checkbox"][data-index="${i}"]`);
if (toggle) toggle.checked = bitStates[i];
}
updateReadout();
return true;
}
// ---------- Shifts ----------
function shiftLeft(){
// logical left shift: drop MSB, add 0 at LSB
bitStates = bitStates.slice(1).concat(false);
buildBitsGrid(); // rebuild keeps labels correct if mode changed (also updates bulbs)
}
function shiftRight(){
if (!isTwos){
// logical right shift
bitStates = [false].concat(bitStates.slice(0, -1));
} else {
// arithmetic right shift (preserve MSB)
const msb = bitStates[0];
bitStates = [msb].concat(bitStates.slice(0, -1));
}
buildBitsGrid();
}
// ---------- Bit width ----------
function applyBitsCount(next){
const wanted = clamp(Number(next) || 8, 4, 64);
if (wanted === bitsCount) return;
// keep the right-most (LSB) bits when resizing (feels natural)
const old = binaryString();
bitsCount = wanted;
// rebuild state from old binary, keeping LSBs
const padded = old.slice(-bitsCount).padStart(bitsCount, "0");
bitStates = [...padded].map(ch => ch === "1");
document.getElementById("bitsField").value = String(bitsCount);
buildBitsGrid();
}
// ---------- Mode toggle ----------
function applyMode(nextIsTwos){
const prevDenary = denaryValue(); // keep the *value* if possible
isTwos = !!nextIsTwos;
// Try to keep the denary value, but clamp if it becomes invalid in the new mode
const { min, max } = rangeForMode();
const kept = clamp(prevDenary, min, max);
setFromDenary(kept);
buildBitsGrid();
}
// ---------- Wire up UI ----------
function wireUI(){
document.getElementById("btnShiftLeft").addEventListener("click", shiftLeft);
document.getElementById("btnShiftRight").addEventListener("click", shiftRight);
document.getElementById("btnCustomBinary").addEventListener("click", () => {
const val = prompt(`Enter a binary number (up to ${bitsCount} bits):`);
if (val === null) return;
if (!setFromBinary(val)) alert("Invalid input. Use only 0 and 1.");
});
document.getElementById("btnCustomDenary").addEventListener("click", () => {
const { min, max } = rangeForMode();
const val = prompt(`Enter a denary number (${min} to ${max}):`);
if (val === null) return;
if (!setFromDenary(val)) alert(`Invalid input. Enter an integer from ${min} to ${max}.`);
});
// Mode toggle
const modeToggle = document.getElementById("modeToggle");
modeToggle.addEventListener("change", () => applyMode(modeToggle.checked));
// Bit width +/- and manual entry
document.getElementById("btnBitsDown").addEventListener("click", () => applyBitsCount(bitsCount - 1));
document.getElementById("btnBitsUp").addEventListener("click", () => applyBitsCount(bitsCount + 1));
const bitsField = document.getElementById("bitsField");
bitsField.addEventListener("change", () => applyBitsCount(bitsField.value));
bitsField.addEventListener("blur", () => applyBitsCount(bitsField.value));
bitsField.addEventListener("keydown", (e) => {
if (e.key === "Enter") applyBitsCount(bitsField.value);
});
}
// ---------- Init ----------
function init(){
// default: 8-bit unsigned
bitsCount = 8;
isTwos = false;
bitStates = Array(bitsCount).fill(false);
document.getElementById("modeToggle").checked = false;
document.getElementById("bitsField").value = String(bitsCount);
wireUI();
buildBitsGrid();
}
init();
</script>
</body>
</html>
</BaseLayout>

347
src/scripts/binary.js Normal file
View File

@@ -0,0 +1,347 @@
const bitsGrid = document.getElementById("bitsGrid");
const denaryEl = document.getElementById("denaryNumber");
const binaryEl = document.getElementById("binaryNumber");
const modeToggle = document.getElementById("modeToggle");
const modeHint = document.getElementById("modeHint");
const bitsInput = document.getElementById("bitsInput");
const btnBitsUp = document.getElementById("btnBitsUp");
const btnBitsDown = document.getElementById("btnBitsDown");
const btnShiftLeft = document.getElementById("btnShiftLeft");
const btnShiftRight = document.getElementById("btnShiftRight");
const btnCustomBinary = document.getElementById("btnCustomBinary");
const btnCustomDenary = document.getElementById("btnCustomDenary");
const btnClear = document.getElementById("btnClear");
const btnMinus1 = document.getElementById("btnMinus1");
const btnPlus1 = document.getElementById("btnPlus1");
const btnAutoRandom = document.getElementById("btnAutoRandom");
let bitCount = clampInt(Number(bitsInput?.value ?? 8), 1, 64);
let isTwos = Boolean(modeToggle?.checked);
let bits = new Array(bitCount).fill(false); // MSB at index 0
let autoTimer = null;
function clampInt(n, min, max){
n = Number(n);
if (!Number.isFinite(n)) return min;
n = Math.trunc(n);
return Math.max(min, Math.min(max, n));
}
/* ----------------------------
Label values (MSB..LSB)
Unsigned: [2^(n-1) ... 1]
Two's: [-2^(n-1), 2^(n-2) ... 1]
----------------------------- */
function getLabelValues(){
const vals = [];
for (let i = 0; i < bitCount; i++){
const pow = bitCount - 1 - i;
let v = 2 ** pow;
if (isTwos && i === 0) v = -v; // ✅ MSB label becomes negative
vals.push(v);
}
return vals;
}
function buildBits(){
// wrap every 8 bits
bitsGrid.style.setProperty("--cols", String(Math.min(8, bitCount)));
bitsGrid.innerHTML = "";
const labelValues = getLabelValues();
for (let i = 0; i < bitCount; i++){
const bit = document.createElement("div");
bit.className = "bit";
bit.innerHTML = `
<div class="bulb" id="bulb-${i}" aria-hidden="true">💡</div>
<div class="bitVal num" id="label-${i}">${labelValues[i]}</div>
<label class="switch" aria-label="Toggle bit">
<input type="checkbox" data-index="${i}">
<span class="slider"></span>
</label>
`;
bitsGrid.appendChild(bit);
}
// hook switches
bitsGrid.querySelectorAll('input[type="checkbox"][data-index]').forEach((input) => {
input.addEventListener("change", () => {
const idx = Number(input.dataset.index);
bits[idx] = input.checked;
updateUI();
});
});
updateUI();
}
function setLabels(){
const labelValues = getLabelValues();
for (let i = 0; i < bitCount; i++){
const el = document.getElementById(`label-${i}`);
if (el) el.textContent = String(labelValues[i]);
}
}
function bitsToUnsigned(){
let n = 0;
for (let i = 0; i < bitCount; i++){
if (!bits[i]) continue;
const pow = bitCount - 1 - i;
n += 2 ** pow;
}
return n;
}
function bitsToTwos(){
// Two's complement interpretation
// value = -MSB*2^(n-1) + sum(other set bits)
let n = 0;
for (let i = 0; i < bitCount; i++){
if (!bits[i]) continue;
const pow = bitCount - 1 - i;
const v = 2 ** pow;
if (i === 0) n -= v;
else n += v;
}
return n;
}
function getCurrentValue(){
return isTwos ? bitsToTwos() : bitsToUnsigned();
}
function setFromUnsignedValue(n){
// clamp to range of bitCount
const max = (2 ** bitCount) - 1;
n = clampInt(n, 0, max);
for (let i = 0; i < bitCount; i++){
const pow = bitCount - 1 - i;
const v = 2 ** pow;
if (n >= v){
bits[i] = true;
n -= v;
} else {
bits[i] = false;
}
}
syncSwitchesAndBulbs();
updateUI(false);
}
function setFromTwosValue(n){
// represent in two's complement with bitCount bits:
// allowed range: [-2^(n-1), 2^(n-1)-1]
const min = -(2 ** (bitCount - 1));
const max = (2 ** (bitCount - 1)) - 1;
n = clampInt(n, min, max);
// Convert to unsigned representation modulo 2^bitCount
const mod = 2 ** bitCount;
let u = ((n % mod) + mod) % mod;
// then set bits from unsigned u
for (let i = 0; i < bitCount; i++){
const pow = bitCount - 1 - i;
const v = 2 ** pow;
if (u >= v){
bits[i] = true;
u -= v;
} else {
bits[i] = false;
}
}
syncSwitchesAndBulbs();
updateUI(false);
}
function formatBinary(groupsOf = 4){
const raw = bits.map(b => (b ? "1" : "0")).join("");
// group for readability (keeps your “wrap every 8 bits” layout for switches;
// this just formats the readout)
let out = "";
for (let i = 0; i < raw.length; i++){
out += raw[i];
const isLast = i === raw.length - 1;
if (!isLast && (i + 1) % groupsOf === 0) out += " ";
}
return out.trim();
}
function syncSwitchesAndBulbs(){
// ✅ Bulbs always update (unsigned OR two's)
bitsGrid.querySelectorAll('input[type="checkbox"][data-index]').forEach((input) => {
const idx = Number(input.dataset.index);
input.checked = Boolean(bits[idx]);
});
for (let i = 0; i < bitCount; i++){
const bulb = document.getElementById(`bulb-${i}`);
if (bulb) bulb.classList.toggle("on", Boolean(bits[i]));
}
}
function updateUI(sync = true){
if (sync) syncSwitchesAndBulbs();
// labels update when mode changes
setLabels();
// readouts
const value = getCurrentValue();
denaryEl.textContent = String(value);
binaryEl.textContent = formatBinary(4);
// hint
if (isTwos){
modeHint.textContent = "Tip: In twos complement, the left-most bit (MSB) represents a negative value.";
} else {
modeHint.textContent = "Tip: In unsigned binary, all bits represent positive values.";
}
}
/* ----------------------------
Controls
----------------------------- */
btnShiftLeft?.addEventListener("click", () => {
// shift left: drop MSB, append 0 to LSB
bits.shift();
bits.push(false);
updateUI();
});
btnShiftRight?.addEventListener("click", () => {
// shift right: drop LSB, insert 0 at MSB
bits.pop();
bits.unshift(false);
updateUI();
});
btnClear?.addEventListener("click", () => {
bits = new Array(bitCount).fill(false);
updateUI();
});
btnMinus1?.addEventListener("click", () => {
const v = getCurrentValue();
if (isTwos) setFromTwosValue(v - 1);
else setFromUnsignedValue(v - 1);
});
btnPlus1?.addEventListener("click", () => {
const v = getCurrentValue();
if (isTwos) setFromTwosValue(v + 1);
else setFromUnsignedValue(v + 1);
});
btnAutoRandom?.addEventListener("click", () => {
// stop if already running
if (autoTimer){
clearInterval(autoTimer);
autoTimer = null;
btnAutoRandom.textContent = "Auto Random";
return;
}
btnAutoRandom.textContent = "Stop Random";
// run briefly then stop automatically
const start = Date.now();
const durationMs = 2200; // auto stop
autoTimer = setInterval(() => {
const now = Date.now();
if (now - start > durationMs){
clearInterval(autoTimer);
autoTimer = null;
btnAutoRandom.textContent = "Auto Random";
return;
}
// random within correct range for current mode
if (isTwos){
const min = -(2 ** (bitCount - 1));
const max = (2 ** (bitCount - 1)) - 1;
const n = Math.floor(Math.random() * (max - min + 1)) + min;
setFromTwosValue(n);
} else {
const max = (2 ** bitCount) - 1;
const n = Math.floor(Math.random() * (max + 1));
setFromUnsignedValue(n);
}
}, 90);
});
btnCustomBinary?.addEventListener("click", () => {
const v = prompt(`Enter a ${bitCount}-bit binary number (0/1):`);
if (v === null) return;
const clean = v.replace(/\s+/g, "");
if (!/^[01]+$/.test(clean)){
alert("Invalid binary. Use only 0 and 1.");
return;
}
const padded = clean.slice(-bitCount).padStart(bitCount, "0");
bits = [...padded].map(ch => ch === "1");
updateUI();
});
btnCustomDenary?.addEventListener("click", () => {
const v = prompt(isTwos
? `Enter a denary number (${-(2 ** (bitCount - 1))} to ${(2 ** (bitCount - 1)) - 1}):`
: `Enter a denary number (0 to ${(2 ** bitCount) - 1}):`
);
if (v === null) return;
const n = Number(v);
if (!Number.isFinite(n) || !Number.isInteger(n)){
alert("Invalid denary. Enter a whole number.");
return;
}
if (isTwos) setFromTwosValue(n);
else setFromUnsignedValue(n);
});
/* ----------------------------
Mode + Bit width
----------------------------- */
modeToggle?.addEventListener("change", () => {
isTwos = Boolean(modeToggle.checked);
// keep the same underlying bit pattern; just reinterpret and relabel
updateUI(false);
});
btnBitsUp?.addEventListener("click", () => {
bitCount = clampInt(bitCount + 1, 1, 64);
bitsInput.value = String(bitCount);
bits = new Array(bitCount).fill(false);
buildBits();
});
btnBitsDown?.addEventListener("click", () => {
bitCount = clampInt(bitCount - 1, 1, 64);
bitsInput.value = String(bitCount);
bits = new Array(bitCount).fill(false);
buildBits();
});
bitsInput?.addEventListener("change", () => {
bitCount = clampInt(Number(bitsInput.value), 1, 64);
bitsInput.value = String(bitCount);
bits = new Array(bitCount).fill(false);
buildBits();
});
/* ----------------------------
Init
----------------------------- */
buildBits();

View File

@@ -1,54 +0,0 @@
let bits = [128,64,32,16,8,4,2,1];
let state = Array(8).fill(0);
const denaryEl = document.getElementById("denaryNumber");
const binaryEl = document.getElementById("binaryNumber");
const bitEls = document.querySelectorAll(".bit");
bitEls.forEach((el, i) => {
el.addEventListener("click", () => {
state[i] = state[i] ? 0 : 1;
el.classList.toggle("on");
update();
});
});
function update() {
const denary = state.reduce((sum, bit, i) => sum + bit * bits[i], 0);
denaryEl.textContent = denary;
binaryEl.textContent = state.join("");
}
function requestBinary() {
const input = prompt("Enter 8-bit binary:");
if (!/^[01]{8}$/.test(input)) return;
state = input.split("").map(Number);
bitEls.forEach((el,i)=>el.classList.toggle("on",state[i]));
update();
}
function requestDenary() {
const input = parseInt(prompt("Enter denary (0255)"),10);
if (isNaN(input) || input < 0 || input > 255) return;
let value = input;
state = bits.map(b => {
if (value >= b) {
value -= b;
return 1;
}
return 0;
});
bitEls.forEach((el,i)=>el.classList.toggle("on",state[i]));
update();
}
function shiftBinary(dir) {
if (dir === "left") state.shift(), state.push(0);
if (dir === "right") state.pop(), state.unshift(0);
bitEls.forEach((el,i)=>el.classList.toggle("on",state[i]));
update();
}
update();

View File

@@ -1,52 +0,0 @@
/* src/styles/base.css */
@import "./md3-tokens.css";
html, body{ height:100%; }
body{
margin:0;
font-family: var(--font-sans);
background: var(--md-surface-2);
color: var(--md-on-surface);
}
a{ color: var(--md-primary); text-decoration: none; }
a:hover{ text-decoration: underline; }
.container{
max-width: 1100px;
margin: 0 auto;
padding: 16px;
}
.card{
background: var(--md-surface);
border: 1px solid var(--md-outline);
border-radius: var(--radius-2);
box-shadow: var(--shadow-1);
padding: 16px;
}
.btn{
display:inline-flex;
gap:8px;
align-items:center;
justify-content:center;
border-radius: 999px;
border: 1px solid var(--md-outline);
background: var(--md-surface);
color: var(--md-on-surface);
padding: 10px 14px;
font-weight: 600;
cursor: pointer;
}
.btn:hover{ filter: brightness(0.98); }
.btn:focus{ outline:none; box-shadow: var(--md-focus); }
.btn-primary{
background: var(--md-primary);
color: var(--md-on-primary);
border-color: transparent;
}
.badge{
display:inline-block;
padding: 2px 10px;
border-radius: 999px;
font-size: 12px;
border: 1px solid var(--md-outline);
background: var(--md-surface-2);
}
code, pre{ font-family: var(--font-mono); }

View File

@@ -1,68 +1,297 @@
.binary-container {
max-width: 1100px;
margin: auto;
padding: 2rem;
color: #e0e0e0;
/* DSEG7ClassicRegular font */
@font-face{
font-family: "DSEG7ClassicRegular";
src:
url("/fonts/DSEG7Classic-Regular.ttf") format("truetype"),
url("/fonts/DSEG7Classic-Regular.woff") format("woff");
font-weight: 400;
font-style: normal;
font-display: swap;
}
.display {
text-align: center;
.binary-wrap{
padding-top: 6px;
}
.label {
font-size: 1.2rem;
opacity: 0.7;
.topGrid{
display:grid;
grid-template-columns: 1fr 340px;
gap: 28px;
align-items:start;
}
.number {
font-size: 3rem;
margin-bottom: 1rem;
color: #00ff66;
.readout{
background: transparent;
text-align:center;
padding: 10px 10px 0;
}
.controls {
margin-top: 1rem;
.label{
letter-spacing: .18em;
font-weight: 800;
color: var(--muted);
text-transform: uppercase;
font-size: 13px;
margin-top: 10px;
}
.controls button {
margin: 0.25rem;
padding: 0.6rem 1rem;
font-size: 1rem;
.num{
font-family: "DSEG7ClassicRegular", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
font-weight: 400;
color: var(--accent);
text-shadow: 0 0 18px var(--accent-dim);
}
.bits {
display: grid;
grid-template-columns: repeat(8, 1fr);
gap: 1rem;
margin-top: 3rem;
.denary{
font-size: 72px; /* smaller */
line-height: 1.0;
margin: 6px 0 10px;
}
.bit {
width: 40px;
height: 80px;
background: #333;
border-radius: 20px;
position: relative;
.binary{
font-size: 46px; /* smaller */
letter-spacing: .12em;
line-height: 1.15;
margin: 6px 0 14px;
white-space: pre-wrap;
word-break: break-word;
display:inline-block;
text-align:center;
}
.controls{
margin-top: 8px;
display:flex;
justify-content:center;
gap: 12px;
flex-wrap: wrap;
}
.controls--twoRows{
flex-direction: column;
gap: 10px;
}
.controlsRow{
display:flex;
gap: 12px;
justify-content:center;
flex-wrap: wrap;
}
.btn{
background: rgba(255,255,255,.06);
border: 1px solid rgba(255,255,255,.14);
color: #fff;
padding: 12px 14px;
border-radius: 12px;
font-weight: 800;
cursor: pointer;
min-width: 160px;
}
.bit::after {
content: "";
width: 32px;
height: 32px;
background: #555;
border-radius: 50%;
position: absolute;
bottom: 6px;
left: 4px;
transition: all 0.2s ease;
.btn:active{ transform: translateY(1px); }
.btn--green{
background: rgba(51,255,122,.16);
border-color: rgba(51,255,122,.45);
}
.bit.on {
background: #00c853;
.btn--green:hover{
background: rgba(51,255,122,.22);
}
.bit.on::after {
bottom: 42px;
background: #eaffea;
.btn--spin{
min-width: 120px;
font-size: 18px; /* bigger */
}
.divider{
margin-top: 22px;
border-top: 1px solid var(--line);
}
.panelCol{
display:flex;
flex-direction:column;
gap: 14px;
}
.card{
background: var(--panel);
border: 1px solid var(--panel-border);
border-radius: 14px;
padding: 14px;
}
.cardTitle{
letter-spacing: .18em;
font-weight: 900;
color: var(--muted);
text-transform: uppercase;
font-size: 12px;
margin: 0 0 10px;
}
.hint{
color: var(--muted);
font-size: 12px;
margin-top: 8px;
line-height: 1.35;
}
.toggleRow{
display:flex;
align-items:center;
justify-content:space-between;
gap: 10px;
}
.toggleLabel{
color: var(--text);
font-weight: 800;
font-size: 14px;
}
.switch{
position:relative;
width:56px;
height:34px;
display:inline-block;
flex:0 0 auto;
}
.switch input{
opacity:0;
width:0;
height:0;
}
.slider{
position:absolute;
inset:0;
background: rgba(255,255,255,.10);
border: 1px solid rgba(255,255,255,.14);
border-radius:999px;
transition:.18s ease;
}
.slider::before{
content:"";
position:absolute;
height:28px;
width:28px;
left:3px;
top:2px;
background: rgba(255,255,255,.92);
border-radius:50%;
transition:.18s ease;
}
.switch input:checked + .slider{
background: rgba(51,255,122,.20);
border-color: rgba(51,255,122,.55);
}
.switch input:checked + .slider::before{
transform: translateX(22px);
background: var(--accent);
}
.bitWidthRow{
display:grid;
grid-template-columns:44px 1fr 44px;
gap:10px;
align-items:center;
}
.miniBtn{
height:44px;
width:44px;
border-radius:12px;
background: rgba(255,255,255,.06);
border: 1px solid rgba(255,255,255,.14);
color:#fff;
cursor:pointer;
font-weight:900;
font-size:18px;
}
.bitInputWrap{
background: rgba(255,255,255,.06);
border: 1px solid rgba(255,255,255,.14);
border-radius:12px;
padding:10px 12px;
display:flex;
align-items:center;
justify-content:space-between;
gap:12px;
}
.bitInputLabel{
color: var(--muted);
font-size:12px;
font-weight:900;
letter-spacing:.18em;
text-transform:uppercase;
}
.bitInput{
width:86px;
text-align:right;
background: transparent;
border: none;
outline: none;
color: var(--accent);
font-family:"DSEG7ClassicRegular", ui-monospace, monospace;
font-size:28px;
}
.bitInput::-webkit-outer-spin-button,
.bitInput::-webkit-inner-spin-button{
-webkit-appearance:none;
margin:0;
}
/* Bits: wrap every 8 */
.bits{
--cols: 8;
margin-top: 26px;
padding-top: 18px;
display:grid;
grid-template-columns: repeat(var(--cols), 90px);
justify-content: center; /* centres when < 8 too */
gap: 18px;
align-items:end;
text-align:center;
}
.bit{
display:flex;
flex-direction:column;
align-items:center;
gap: 10px;
padding: 8px 4px;
}
/* Bulb emoji bigger */
.bulb{
font-size: 26px; /* bigger */
line-height: 1;
filter: grayscale(1);
opacity: .35;
transform: translateY(2px);
}
.bulb.on{
filter: grayscale(0);
opacity: 1;
text-shadow: 0 0 16px rgba(255,216,107,.55);
}
.bitVal{
font-size: 28px;
color: var(--text);
opacity: .95;
line-height: 1;
min-height: 34px;
}
@media (max-width: 980px){
.topGrid{ grid-template-columns: 1fr; }
.denary{ font-size: 62px; }
.binary{ font-size: 40px; }
}

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@font-face {
font-family: "DSEG7";
src: url("/fonts/DSEG7Classic-Regular.ttf") format("truetype");
font-weight: normal;
font-style: normal;
}
.dseg {
font-family: "DSEG7", monospace;
letter-spacing: 0.15em;
}

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src/styles/global.css Normal file
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:root{
--bg: #1f2027;
--panel: #22242d;
--panel2: rgba(255,255,255,.04);
--text: #e8e8ee;
--muted: #a9acb8;
--accent: #33ff7a;
--accent-dim: rgba(51,255,122,.15);
--line: rgba(255,255,255,.12);
}
*{ box-sizing:border-box; }
body{
margin:0;
font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
background: var(--bg);
color: var(--text);
}
.siteHeader{
position: sticky;
top: 0;
z-index: 10;
background: rgba(0,0,0,.15);
backdrop-filter: blur(8px);
border-bottom: 1px solid rgba(255,255,255,.06);
}
.siteHeaderInner{
max-width: 1200px;
margin: 0 auto;
padding: 14px 20px;
display:flex;
align-items:center;
justify-content:space-between;
gap: 16px;
}
.brand{
color: var(--text);
text-decoration:none;
font-weight: 900;
letter-spacing:.02em;
}
.nav{
display:flex;
gap: 14px;
flex-wrap:wrap;
justify-content:flex-end;
}
.nav a{
color: var(--muted);
text-decoration:none;
font-weight: 700;
font-size: 14px;
}
.nav a:hover{ color: var(--text); }
.siteMain{
min-height: calc(100vh - 140px);
}
.siteFooter{
border-top: 1px solid rgba(255,255,255,.08);
margin-top: 32px;
background: rgba(0,0,0,.10);
}
.siteFooterInner{
max-width: 1200px;
margin: 0 auto;
padding: 18px 20px 26px;
color: var(--muted);
font-size: 12px;
line-height: 1.6;
}
.footerTitle{
color: var(--text);
opacity:.9;
font-weight: 800;
margin-bottom: 6px;
}

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/* src/styles/md3-tokens.css */
/* MD3-inspired tokens tuned for education: high readability, clear contrast, calm surfaces */
:root{
/* Typography */
--font-sans: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
--font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
/* Spacing + shape */
--radius-1: 10px;
--radius-2: 16px;
--radius-3: 22px;
--shadow-1: 0 1px 2px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.06);
/* Color roles (keep simple) */
--md-surface: #ffffff;
--md-surface-2: #f6f7fb;
--md-on-surface: #111318;
--md-primary: #2f6fed; /* calm blue */
--md-on-primary: #ffffff;
--md-secondary: #5a5f72; /* muted */
--md-on-secondary: #ffffff;
--md-tertiary: #0f766e; /* teal for "practical" tools */
--md-on-tertiary: #ffffff;
--md-outline: #d7dbe7;
--md-success: #1a7f37;
--md-warning: #b54708;
--md-danger: #b42318;
/* Focus ring for accessibility */
--md-focus: 0 0 0 3px rgba(47,111,237,.28);
}
@media (prefers-color-scheme: dark){
:root{
--md-surface: #0b0e14;
--md-surface-2: #121725;
--md-on-surface: #e8eaf2;
--md-primary: #9bb6ff;
--md-on-primary: #0b0e14;
--md-secondary: #b8bccd;
--md-on-secondary: #0b0e14;
--md-tertiary: #4fd1c5;
--md-on-tertiary: #0b0e14;
--md-outline: #2b3244;
--md-focus: 0 0 0 3px rgba(155,182,255,.25);
}
}

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:root{
--bg: #1f2027;
--panel: rgba(255,255,255,.04);
--panel-border: rgba(255,255,255,.10);
--text: #e8e8ee;
--muted: #a9acb8;
--accent: #33ff7a;
--accent-dim: rgba(51,255,122,.15);
--line: rgba(255,255,255,.12);
}
*{ box-sizing: border-box; }
body{
margin:0;
font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
background: var(--bg);
color: var(--text);
}
.site-header{
border-bottom: 1px solid rgba(255,255,255,.08);
background: rgba(0,0,0,.12);
}
.site-header__inner{
max-width: 1200px;
margin: 0 auto;
padding: 14px 20px;
display:flex;
align-items:center;
justify-content:space-between;
gap: 18px;
}
.brand{
font-weight: 800;
letter-spacing: .02em;
}
.nav{
display:flex;
gap: 14px;
flex-wrap: wrap;
justify-content:flex-end;
}
.nav__link{
color: var(--muted);
text-decoration:none;
font-weight: 700;
font-size: 13px;
}
.nav__link:hover{ color: var(--text); }
.site-main{
max-width: 1200px;
margin: 0 auto;
padding: 28px 20px 40px;
min-height: calc(100vh - 140px);
}
.site-footer{
border-top: 1px solid rgba(255,255,255,.08);
background: rgba(0,0,0,.10);
}
.site-footer__inner{
max-width: 1200px;
margin: 0 auto;
padding: 16px 20px;
color: var(--muted);
font-size: 12px;
line-height: 1.5;
}