Completed Wave 3 features:

- [X] New User Interface (Responsive)
- [X] Two's Compliment Simulator
- [X] Extended Binary Simulator (Custom bit sizes)
- [X] Unified Binary Simulator (Unsigned & Two's Completment combined)
- [X] Extended Hexadecimal Simulator
- [X] Unified Hexadecimal Simulator (For GCSE & A Level Specification)
- [X] Enhanced Gate Simulator (Truth Table Creator)
- [X] Compound Gate Simulator
- [ ] Computer Components Simulator

Signed-off-by: Alexander Lyall <alex@adcm.uk>

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dist/_astro/binary.astro_astro_type_script_index_0_lang.C_c_A3x5.js

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dist/binary/index.html

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-:root{--panel-w: 360px;--gap: 22px}.wrap{max-width:1400px;margin:0 auto;padding:26px 20px 48px;position:relative}.topGrid{display:grid;grid-template-columns:1fr var(--panel-w);gap:var(--gap);align-items:start}body.toolboxClosed .topGrid{grid-template-columns:1fr}body.toolboxClosed #toolboxPanel{display:none}.mainCol{min-width:0}.readout{text-align:center;margin-top:8px}.label{opacity:.8;letter-spacing:.12em;text-transform:uppercase;font-size:12px}.num{display:inline-block;width:fit-content;max-width:100%;white-space:pre-line;letter-spacing:2px}.denaryValue{font-size:54px;margin:6px 0 10px}.binaryValue{font-size:56px;margin:4px 0 18px}.divider{height:1px;background:#ffffff1a;margin:14px auto 24px;max-width:900px}.bitsWrap{padding-top:6px}.bitsGrid{display:grid;gap:24px;justify-content:center}.bitsGrid{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));max-width:1200px;margin:0 auto}.bitsGrid.bitsFew{justify-content:center}.bit{display:grid;justify-items:center;gap:8px}.bulb{font-size:32px;line-height:1;opacity:.45}.bitVal{font-size:22px;line-height:1.05;text-align:center;white-space:nowrap}.switch{position:relative;display:inline-block;width:52px;height:28px}.switch input{display:none}.slider{position:absolute;inset:0;border-radius:999px;background:#ffffff2e;border:1px solid rgba(255,255,255,.14)}.slider:before{content:"";position:absolute;height:22px;width:22px;left:3px;top:2.5px;border-radius:999px;background:#fff;transition:transform .18s ease}.switch input:checked+.slider:before{transform:translate(22px)}.toolboxToggle{position:absolute;right:20px;top:18px;z-index:20;display:inline-flex;align-items:center;gap:10px;padding:10px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:#ffffff0f;color:#ffffffeb;cursor:pointer}.toolboxText{letter-spacing:.12em;font-weight:900}.panelCol{position:sticky;top:calc(var(--nav-h, 72px) + 18px);align-self:start;display:grid;gap:16px}.card{border:1px solid rgba(255,255,255,.12);border-radius:16px;background:#ffffff0d;padding:14px}.cardTitle{opacity:.8;letter-spacing:.14em;text-transform:uppercase;font-size:12px;margin-bottom:10px}.hint{opacity:.7;font-size:11px;margin-top:10px;line-height:1.35}.toggleRow{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center}.toggleLabel{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;white-space:nowrap}.subCard{margin-top:12px;border:1px solid rgba(255,255,255,.1);border-radius:14px;background:#0000001f;padding:12px}.subTitle{opacity:.8;letter-spacing:.14em;text-transform:uppercase;font-size:11px;margin-bottom:10px}.bitWidthRow{display:grid;grid-template-columns:44px 1fr 44px;gap:10px;align-items:center}.bitInputWrap{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:center;padding:10px 12px;border:1px solid rgba(255,255,255,.1);border-radius:12px;background:#ffffff0a}.bitInputLabel{opacity:.75;letter-spacing:.14em;text-transform:uppercase;font-size:11px;white-space:nowrap}.bitInput{width:100%;min-width:0;background:transparent;border:none;outline:none;color:inherit;font-size:20px;text-align:right}.miniBtn{height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:#ffffffe6;font-size:18px;cursor:pointer}.controlsRow{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}.btn{border-radius:12px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:#ffffffeb;padding:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;cursor:pointer}.btnWide{width:100%}.btnAccent{background:#00ff8c1f;border-color:#00ff8c38}.toolRowCentered{display:flex;justify-content:center;gap:12px;margin:10px 0 12px}.toolBtn{width:56px;height:56px;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:#ffffffeb;font-size:18px;cursor:pointer}.toolDec{background:#ff000024;border-color:#f003}.toolInc{background:#00ff8c24;border-color:#00ff8c33}.toolRow2{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}.btnReset{color:#ffffffeb}
-</style></head> <body data-astro-cid-37fxchfa> <header class="siteNav" data-astro-cid-37fxchfa> <div class="navInner" data-astro-cid-37fxchfa> <a class="brand" href="/" data-astro-cid-37fxchfa> <img class="brandLogo" src="/images/computing-box-logo.svg" alt="Computing:Box logo" data-astro-cid-37fxchfa> <span class="brandName" data-astro-cid-37fxchfa>COMPUTING:BOX</span> </a> <nav class="navLinks" aria-label="Site navigation" data-astro-cid-37fxchfa> <a href="/about" data-astro-cid-37fxchfa>ABOUT</a> <a href="/binary" data-astro-cid-37fxchfa>BINARY</a> <a href="/hexadecimal" data-astro-cid-37fxchfa>HEXADECIMAL</a> <a href="/hex-colours" data-astro-cid-37fxchfa>HEX COLOURS</a> <a href="/logic-gates" data-astro-cid-37fxchfa>LOGIC GATES</a> </nav> </div> </header> <main class="pageWrap" data-astro-cid-37fxchfa>  <button id="toolboxToggle" class="toolboxToggle" type="button" aria-expanded="true"> <span class="toolboxIcon" aria-hidden="true">🧰</span> <span class="toolboxLabel">TOOLBOX</span> </button> <main class="wrap"> <section class="topGrid"> <!-- LEFT --> <div> <div class="readout"> <div class="label">Denary</div> <div id="denaryNumber" class="num denaryValue">0</div> <div class="label">Binary</div> <div id="binaryNumber" class="num binaryValue">0000 0000</div> </div> <div class="divider"></div> <section class="bitsWrap" aria-label="Bit switches"> <div class="bitsGrid" id="bitsGrid"></div> </section> </div> <!-- RIGHT TOOLBOX --> <aside id="toolbox" class="panelCol" aria-label="Toolbox"> <!-- SETTINGS --> <div class="card"> <div class="cardTitle">Settings</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> <div class="toggleLabel" id="lblTwos">Two&rsquo;s complement</div> </div> <div class="hint" id="modeHint">
+<!DOCTYPE html><html lang="en"> <head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Binary Simulator | Computing:Box</title><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700;800;900&display=swap" rel="stylesheet"><link rel="stylesheet" href="/_astro/binary.BbxrcYRT.css"></head> <body> <header class="siteNav"> <div class="navInner"> <a class="brand" href="/"> <img class="brandLogo" src="/images/computing-box-logo.svg" alt="Computing:Box logo"> <span class="brandName">COMPUTING:BOX</span> </a> <nav class="navLinks" aria-label="Site navigation"> <a href="/about">ABOUT</a> <a href="/binary">BINARY</a> <a href="/hexadecimal">HEXADECIMAL</a> <a href="/hex-colours">HEX COLOURS</a> <a href="/logic-gates">LOGIC GATES</a> </nav> </div> </header> <main class="pageWrap">  <div class="binaryPage" id="binaryPage"> <button id="toolboxToggle" class="toolboxToggle" type="button" aria-expanded="true"> <span class="toolboxIcon" aria-hidden="true">🧰</span> <span class="toolboxText">TOOLBOX</span> </button> <section class="topGrid"> <div class="leftCol"> <div class="readout"> <div class="label">Denary</div> <div id="denaryNumber" class="num denaryValue">0</div> <div class="label">Binary</div> <div id="binaryNumber" class="num binaryValue">00000000</div> </div> <div class="divider"></div> <section class="bitsWrap" aria-label="Bit switches"> <div class="bitsGrid" id="bitsGrid"></div> </section> </div> <aside id="toolboxPanel" class="panelCol" aria-label="Toolbox"> <div class="card"> <div class="cardTitle">Settings</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> <div class="toggleLabel" id="lblTwos">Two's complement</div> </div> <div class="hint" id="modeHint">
 Tip: In unsigned binary, all bits represent positive values.
-</div> <div class="subCard"> <div class="subTitle">Bit width</div> <div class="bitWidthRow"> <button class="miniBtn" id="btnBitsDown" type="button" aria-label="Decrease bits">−</button> <div class="bitInputWrap"> <div class="bitInputLabel">Bits</div> <input id="bitsInput" class="bitInput" type="number" inputmode="numeric" min="1" max="64" step="1" value="8" aria-label="Number of bits"> </div> <button class="miniBtn" id="btnBitsUp" type="button" aria-label="Increase bits">+</button> </div> </div> </div> <!-- CUSTOM --> <div class="card"> <div class="cardTitle">Custom</div> <div class="twoBtnRow"> <button class="btn btnAccent" id="btnCustomBinary" type="button">Custom Binary</button> <button class="btn btnAccent" id="btnCustomDenary" type="button">Custom Denary</button> </div> <button class="toolBtn toolWide toolRandom" id="btnRandom" type="button">
-Random
-</button> <div class="hint">Random runs briefly then stops automatically.</div> </div> <!-- TOOLS --> <div class="card"> <div class="cardTitle">Tools</div> <div class="toolsTopRow"> <button class="toolBtn toolArrow toolDown" id="btnDec" type="button" aria-label="Decrement">▼</button> <button class="toolBtn toolArrow toolUp" id="btnInc" type="button" aria-label="Increment">▲</button> </div> <div class="twoBtnRow"> <button class="btn" id="btnShiftLeft" type="button">Left Shift</button> <button class="btn" id="btnShiftRight" type="button">Right Shift</button> </div> <button class="toolBtn toolWide toolReset" id="btnClear" type="button">Reset</button> </div> </aside> </section> </main> <script type="module" src="/src/scripts/binary.js"></script>  </main> </body></html>
+</div> <div class="subCard"> <div class="subTitle">Bit width</div> <div class="bitWidthRow"> <button class="miniBtn" id="btnBitsDown" type="button" aria-label="Decrease bits">−</button> <div class="bitInputWrap"> <div class="bitInputLabel">Bits</div> <input id="bitsInput" class="bitInput" type="number" inputmode="numeric" min="1" max="64" step="1" value="8" aria-label="Number of bits"> </div> <button class="miniBtn" id="btnBitsUp" type="button" aria-label="Increase bits">+</button> </div> </div> </div> <div class="card"> <div class="cardTitle">Custom Number</div> <div class="controlsRow"> <button class="btn btnAccent btnHalf" id="btnCustomBinary" type="button">Custom Binary</button> <button class="btn btnAccent btnHalf" id="btnCustomDenary" type="button">Custom Denary</button> </div> <button class="btn btnWide" id="btnRandom" type="button">Random</button> <div class="hint">Random runs briefly then stops automatically.</div> </div> <div class="card"> <div class="cardTitle">Tools</div> <div class="toolRowCentered"> <button class="toolBtn toolSpin toolDec" id="btnDec" type="button" aria-label="Decrement">▼</button> <button class="toolBtn toolSpin toolInc" id="btnInc" type="button" aria-label="Increment">▲</button> </div> <div class="toolRow2"> <button class="btn btnHalf" id="btnShiftLeft" type="button">Left Shift</button> <button class="btn btnHalf" id="btnShiftRight" type="button">Right Shift</button> </div> <button class="btn btnReset btnWide" id="btnClear" type="button">Reset</button> </div> </aside> </section> </div> <script type="module" src="/_astro/binary.astro_astro_type_script_index_0_lang.C_c_A3x5.js"></script>  </main> <footer class="siteFooter"> <div class="footerInner"> <div>COMPUTER SCIENCE CONCEPT SIMULATORS</div> <div>© 2026 COMPUTING:BOX • CREATED WITH ♥ BY MR LYALL</div> </div> </footer> </body></html>

dist/favicon.svg

@@ -0,0 +1,9 @@
+<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>

dist/hexadecimal/index.html

@@ -1,5 +1,3 @@
-<!DOCTYPE html><html lang="en" data-astro-cid-37fxchfa> <head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Hexadecimal | Computing:Box</title><style>:root{--nav-h: 108px;--bg: #1f2027;--text: #e8e8ee;--muted: #a9acb8;--line: rgba(255,255,255,.1)}body{margin:0;background:var(--bg);color:var(--text)}.siteNav[data-astro-cid-37fxchfa]{position:sticky;top:0;z-index:50;height:var(--nav-h);background:#0000001a;border-bottom:1px solid var(--line);backdrop-filter:blur(8px)}.navInner[data-astro-cid-37fxchfa]{height:100%;max-width:1400px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand[data-astro-cid-37fxchfa]{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text)}.brandLogo[data-astro-cid-37fxchfa]{width:2em;height:2em;image-rendering:pixelated}.brandName[data-astro-cid-37fxchfa]{letter-spacing:.12em;font-weight:900;text-transform:uppercase;font-size:18px}.navLinks[data-astro-cid-37fxchfa]{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.navLinks[data-astro-cid-37fxchfa] a[data-astro-cid-37fxchfa]{color:var(--muted);text-decoration:none;font-weight:800;letter-spacing:.12em;font-size:16px;text-transform:uppercase}.navLinks[data-astro-cid-37fxchfa] a[data-astro-cid-37fxchfa]:hover{color:var(--text)}.pageWrap[data-astro-cid-37fxchfa]{max-width:1400px;margin:0 auto}
-</style>
-<link rel="stylesheet" href="/_astro/hexadecimal.C_Opoo6d.css"></head> <body data-astro-cid-37fxchfa> <header class="siteNav" data-astro-cid-37fxchfa> <div class="navInner" data-astro-cid-37fxchfa> <a class="brand" href="/" data-astro-cid-37fxchfa> <img class="brandLogo" src="/images/computing-box-logo.svg" alt="Computing:Box logo" data-astro-cid-37fxchfa> <span class="brandName" data-astro-cid-37fxchfa>COMPUTING:BOX</span> </a> <nav class="navLinks" aria-label="Site navigation" data-astro-cid-37fxchfa> <a href="/about" data-astro-cid-37fxchfa>ABOUT</a> <a href="/binary" data-astro-cid-37fxchfa>BINARY</a> <a href="/hexadecimal" data-astro-cid-37fxchfa>HEXADECIMAL</a> <a href="/hex-colours" data-astro-cid-37fxchfa>HEX COLOURS</a> <a href="/logic-gates" data-astro-cid-37fxchfa>LOGIC GATES</a> </nav> </div> </header> <main class="pageWrap" data-astro-cid-37fxchfa>  <section class="hex-sim" data-hex-sim> <div class="hex-main"> <div class="hex-readout"> <div class="hex-label">DENARY</div> <div class="hex-number" data-out="denary">0</div> <div class="hex-label hex-mt">HEXADECIMAL</div> <div class="hex-number hex-number--small" data-out="hex">00</div> <div class="hex-label hex-mt">BINARY</div> <div class="hex-number hex-number--tiny" data-out="bin">0000 0000</div> </div> <div class="hex-divider"></div> <div class="hex-digits" data-out="digitsRow"></div> </div> <!-- Toolbox button --> <button class="hex-toolbox-btn" type="button" data-action="toggleToolbox" aria-controls="hex-toolbox" aria-expanded="true"> <span class="hex-toolbox-icon" aria-hidden="true"> <!-- toolbox icon --> <svg viewBox="0 0 24 24" width="18" height="18" fill="none"> <path d="M9 7V6a3 3 0 0 1 6 0v1" stroke="currentColor" stroke-width="2" stroke-linecap="round"></path> <path d="M4 9h16l-1.3 10.4A2 2 0 0 1 16.7 21H7.3a2 2 0 0 1-1.98-1.6L4 9Z" stroke="currentColor" stroke-width="2" stroke-linejoin="round"></path> <path d="M10 13h4" stroke="currentColor" stroke-width="2" stroke-linecap="round"></path> </svg> </span>
-TOOLBOX
-</button> <!-- Toolbox panel --> <aside class="hex-toolbox is-open" id="hex-toolbox" data-out="toolbox"> <div class="hex-panel"> <div class="hex-panel-title">SETTINGS</div> <div class="hex-setting-title">HEX DIGIT WIDTH</div> <div class="hex-width"> <button class="hex-btn hex-btn--square" type="button" data-action="digitsMinus">−</button> <div class="hex-width-readout"> <div class="hex-width-label">DIGITS</div> <div class="hex-width-number" data-out="digitsCount">2</div> </div> <button class="hex-btn hex-btn--square" type="button" data-action="digitsPlus">+</button> </div> <div class="hex-hint" data-out="bitsHint">= 8 bits</div> </div> <div class="hex-panel"> <div class="hex-panel-title">CUSTOM NUMBER</div> <div class="hex-grid-2"> <button class="hex-btn hex-btn--green" type="button" data-action="customHex">Custom Hexadecimal</button> <button class="hex-btn hex-btn--green" type="button" data-action="customDenary">Custom Denary</button> </div> <!-- Custom Binary + Random on SAME row, same size --> <div class="hex-grid-2 hex-mt-sm"> <button class="hex-btn hex-btn--green" type="button" data-action="customBinary">Custom Binary</button> <button class="hex-btn hex-btn--wide hex-btn--random" type="button" data-action="random" data-random>Random</button> </div> <div class="hex-tiny-note">RANDOM RUNS BRIEFLY THEN STOPS AUTOMATICALLY.</div> </div> <div class="hex-panel"> <div class="hex-panel-title">TOOLS</div> <div class="hex-tools-top"> <button class="hex-btn hex-btn--square hex-btn--red" type="button" data-action="decrement" title="Decrement">▼</button> <button class="hex-btn hex-btn--square hex-btn--green2" type="button" data-action="increment" title="Increment">▲</button> </div> <button class="hex-btn hex-btn--wide hex-btn--reset" type="button" data-action="reset">Reset</button> </div> </aside> <!-- Custom number dialog --> <dialog class="hex-dialog" data-out="dialog"> <div class="hex-dialog-card"> <div class="hex-dialog-title" data-out="dialogTitle">Custom</div> <input class="hex-dialog-input hex-font-mono" data-out="dialogInput"> <div class="hex-dialog-hint" data-out="dialogHint"></div> <div class="hex-dialog-error" data-out="dialogError" aria-live="polite"></div> <div class="hex-dialog-actions"> <button class="hex-btn" type="button" data-action="dialogCancel">Cancel</button> <button class="hex-btn hex-btn--green" type="button" data-action="dialogApply">Apply</button> </div> </div> </dialog> <script type="module" src="/src/components/simulators/hex/hex-simulator.ts"></script> </section>  </main> </body></html>
+<!DOCTYPE html><html lang="en"> <head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Hexadecimal Simulator | Computing:Box</title><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;700;800;900&display=swap" rel="stylesheet"><link rel="stylesheet" href="/_astro/binary.BbxrcYRT.css"></head> <body> <header class="siteNav"> <div class="navInner"> <a class="brand" href="/"> <img class="brandLogo" src="/images/computing-box-logo.svg" alt="Computing:Box logo"> <span class="brandName">COMPUTING:BOX</span> </a> <nav class="navLinks" aria-label="Site navigation"> <a href="/about">ABOUT</a> <a href="/binary">BINARY</a> <a href="/hexadecimal">HEXADECIMAL</a> <a href="/hex-colours">HEX COLOURS</a> <a href="/logic-gates">LOGIC GATES</a> </nav> </div> </header> <main class="pageWrap">  <div class="binaryPage" id="hexPage"> <button id="toolboxToggle" class="toolboxToggle" type="button" aria-expanded="true"> <span class="toolboxIcon" aria-hidden="true">🧰</span> <span class="toolboxText">TOOLBOX</span> </button> <section class="topGrid"> <div class="leftCol"> <div class="readout"> <div class="label">Denary</div> <div id="denaryNumber" class="num denaryValue">0</div> <div class="label">Hexadecimal</div> <div id="hexNumber" class="num hexValue">00</div> <div class="label">Binary</div> <div id="binaryNumber" class="num binaryValue">00000000</div> </div> <div class="divider"></div> <section class="bitsWrap" aria-label="Hexadecimal sliders"> <div class="hexGrid" id="hexGrid"></div> </section> </div> <aside id="toolboxPanel" class="panelCol" aria-label="Toolbox"> <div class="card"> <div class="cardTitle">Settings</div> <div class="hint" style="margin-top: 0; margin-bottom: 14px;">
+Hexadecimal represents numbers using base 16 (0-9, A-F).
+</div> <div class="subCard"> <div class="subTitle">Digit width</div> <div class="bitWidthRow"> <button class="miniBtn" id="btnDigitsDown" type="button" aria-label="Decrease digits">−</button> <div class="bitInputWrap"> <div class="bitInputLabel">Digits</div> <input id="digitsInput" class="bitInput" type="number" inputmode="numeric" min="1" max="16" step="1" value="2" aria-label="Number of hex digits"> </div> <button class="miniBtn" id="btnDigitsUp" type="button" aria-label="Increase digits">+</button> </div> </div> </div> <div class="card"> <div class="cardTitle">Custom Number</div> <div class="controlsRow"> <button class="btn btnAccent btnHalf" id="btnCustomHex" type="button">Custom Hex</button> <button class="btn btnAccent btnHalf" id="btnCustomDenary" type="button">Custom Denary</button> </div> <div class="controlsRow"> <button class="btn btnAccent btnWide" id="btnCustomBinary" type="button">Custom Binary</button> </div> <button class="btn btnWide" id="btnRandom" type="button">Random</button> <div class="hint">Random runs briefly then stops automatically.</div> </div> <div class="card"> <div class="cardTitle">Tools</div> <div class="toolRowCentered"> <button class="toolBtn toolSpin toolDec" id="btnDec" type="button" aria-label="Decrement">▼</button> <button class="toolBtn toolSpin toolInc" id="btnInc" type="button" aria-label="Increment">▲</button> </div> <button class="btn btnReset btnWide" id="btnClear" type="button">Reset</button> </div> </aside> </section> </div> <script type="module" src="/_astro/hexadecimal.astro_astro_type_script_index_0_lang.C4Wx7oaX.js"></script>  </main> <footer class="siteFooter"> <div class="footerInner"> <div>COMPUTER SCIENCE CONCEPT SIMULATORS</div> <div>© 2026 COMPUTING:BOX • CREATED WITH ♥ BY MR LYALL</div> </div> </footer> </body></html>

dist/index.html

@@ -1,5 +1,5 @@
-<!DOCTYPE html><html lang="en" data-astro-cid-sckkx6r4> <head><meta charset="UTF-8"><meta name="viewport" content="width=device-width"><link rel="icon" type="image/svg+xml" href="/favicon.svg"><meta name="generator" content="Astro v5.16.6"><title>Astro Basics</title><style>#background[data-astro-cid-mmc7otgs]{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;filter:blur(100px)}#container[data-astro-cid-mmc7otgs]{font-family:Inter,Roboto,Helvetica Neue,Arial Nova,Nimbus Sans,Arial,sans-serif;height:100%}main[data-astro-cid-mmc7otgs]{height:100%;display:flex;justify-content:center}#hero[data-astro-cid-mmc7otgs]{display:flex;align-items:start;flex-direction:column;justify-content:center;padding:16px}h1[data-astro-cid-mmc7otgs]{font-size:22px;margin-top:.25em}#links[data-astro-cid-mmc7otgs]{display:flex;gap:16px}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs]{display:flex;align-items:center;padding:10px 12px;color:#111827;text-decoration:none;transition:color .2s}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs]:hover{color:#4e5056}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs] svg[data-astro-cid-mmc7otgs]{height:1em;margin-left:8px}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs].button{color:#fff;background:linear-gradient(83.21deg,#3245ff,#bc52ee);box-shadow:inset 0 0 0 1px #ffffff1f,inset 0 -2px #0000003d;border-radius:10px}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs].button:hover{color:#e6e6e6;box-shadow:none}pre[data-astro-cid-mmc7otgs]{font-family:ui-monospace,Cascadia Code,Source Code Pro,Menlo,Consolas,DejaVu Sans Mono,monospace;font-weight:400;background:linear-gradient(14deg,#d83333,#f041ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0}h2[data-astro-cid-mmc7otgs]{margin:0 0 1em;font-weight:400;color:#111827;font-size:20px}p[data-astro-cid-mmc7otgs]{color:#4b5563;font-size:16px;line-height:24px;letter-spacing:-.006em;margin:0}code[data-astro-cid-mmc7otgs]{display:inline-block;background:linear-gradient(66.77deg,#f3cddd,#f5cee7) padding-box,linear-gradient(155deg,#d83333,#f041ff 18%,#f5cee7 45%) border-box;border-radius:8px;border:1px solid transparent;padding:6px 8px}.box[data-astro-cid-mmc7otgs]{padding:16px;background:#fff;border-radius:16px;border:1px solid white}#news[data-astro-cid-mmc7otgs]{position:absolute;bottom:16px;right:16px;max-width:300px;text-decoration:none;transition:background .2s;backdrop-filter:blur(50px)}#news[data-astro-cid-mmc7otgs]:hover{background:#ffffff8c}@media screen and (max-height:368px){#news[data-astro-cid-mmc7otgs]{display:none}}@media screen and (max-width:768px){#container[data-astro-cid-mmc7otgs]{display:flex;flex-direction:column}#hero[data-astro-cid-mmc7otgs]{display:block;padding-top:10%}#links[data-astro-cid-mmc7otgs]{flex-wrap:wrap}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs].button{padding:14px 18px}#news[data-astro-cid-mmc7otgs]{right:16px;left:16px;bottom:2.5rem;max-width:100%}h1[data-astro-cid-mmc7otgs]{line-height:1.5}}html,body{margin:0;width:100%;height:100%}
-</style></head> <body data-astro-cid-sckkx6r4>  <div id="container" data-astro-cid-mmc7otgs> <img id="background" src="/_astro/background.Mahwsfbs.svg" alt="" fetchpriority="high" data-astro-cid-mmc7otgs> <main data-astro-cid-mmc7otgs> <section id="hero" data-astro-cid-mmc7otgs> <a href="https://astro.build" data-astro-cid-mmc7otgs><img src="/_astro/astro.CXuftnGC.svg" width="115" height="48" alt="Astro Homepage" data-astro-cid-mmc7otgs></a> <h1 data-astro-cid-mmc7otgs>
+<!DOCTYPE html><html lang="en" data-astro-cid-sckkx6r4> <head><meta charset="UTF-8"><meta name="viewport" content="width=device-width"><link rel="icon" type="image/svg+xml" href="/favicon.svg"><meta name="generator" content="Astro v5.18.0"><title>Astro Basics</title><style>#background[data-astro-cid-mmc7otgs]{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;filter:blur(100px)}#container[data-astro-cid-mmc7otgs]{font-family:Inter,Roboto,Helvetica Neue,Arial Nova,Nimbus Sans,Arial,sans-serif;height:100%}main[data-astro-cid-mmc7otgs]{height:100%;display:flex;justify-content:center}#hero[data-astro-cid-mmc7otgs]{display:flex;align-items:start;flex-direction:column;justify-content:center;padding:16px}h1[data-astro-cid-mmc7otgs]{font-size:22px;margin-top:.25em}#links[data-astro-cid-mmc7otgs]{display:flex;gap:16px}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs]{display:flex;align-items:center;padding:10px 12px;color:#111827;text-decoration:none;transition:color .2s}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs]:hover{color:#4e5056}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs] svg[data-astro-cid-mmc7otgs]{height:1em;margin-left:8px}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs].button{color:#fff;background:linear-gradient(83.21deg,#3245ff,#bc52ee);box-shadow:inset 0 0 0 1px #ffffff1f,inset 0 -2px #0000003d;border-radius:10px}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs].button:hover{color:#e6e6e6;box-shadow:none}pre[data-astro-cid-mmc7otgs]{font-family:ui-monospace,Cascadia Code,Source Code Pro,Menlo,Consolas,DejaVu Sans Mono,monospace;font-weight:400;background:linear-gradient(14deg,#d83333,#f041ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0}h2[data-astro-cid-mmc7otgs]{margin:0 0 1em;font-weight:400;color:#111827;font-size:20px}p[data-astro-cid-mmc7otgs]{color:#4b5563;font-size:16px;line-height:24px;letter-spacing:-.006em;margin:0}code[data-astro-cid-mmc7otgs]{display:inline-block;background:linear-gradient(66.77deg,#f3cddd,#f5cee7) padding-box,linear-gradient(155deg,#d83333,#f041ff 18%,#f5cee7 45%) border-box;border-radius:8px;border:1px solid transparent;padding:6px 8px}.box[data-astro-cid-mmc7otgs]{padding:16px;background:#fff;border-radius:16px;border:1px solid white}#news[data-astro-cid-mmc7otgs]{position:absolute;bottom:16px;right:16px;max-width:300px;text-decoration:none;transition:background .2s;backdrop-filter:blur(50px)}#news[data-astro-cid-mmc7otgs]:hover{background:#ffffff8c}@media screen and (max-height:368px){#news[data-astro-cid-mmc7otgs]{display:none}}@media screen and (max-width:768px){#container[data-astro-cid-mmc7otgs]{display:flex;flex-direction:column}#hero[data-astro-cid-mmc7otgs]{display:block;padding-top:10%}#links[data-astro-cid-mmc7otgs]{flex-wrap:wrap}#links[data-astro-cid-mmc7otgs] a[data-astro-cid-mmc7otgs].button{padding:14px 18px}#news[data-astro-cid-mmc7otgs]{right:16px;left:16px;bottom:2.5rem;max-width:100%}h1[data-astro-cid-mmc7otgs]{line-height:1.5}}html,body{margin:0;width:100%;height:100%}
+</style></head> <body data-astro-cid-sckkx6r4>  <div id="container" data-astro-cid-mmc7otgs> <img id="background" src="/_astro/background.BPKAcmfN.svg" alt="" fetchpriority="high" data-astro-cid-mmc7otgs> <main data-astro-cid-mmc7otgs> <section id="hero" data-astro-cid-mmc7otgs> <a href="https://astro.build" data-astro-cid-mmc7otgs><img src="/_astro/astro.Dm8K3lV8.svg" width="115" height="48" alt="Astro Homepage" data-astro-cid-mmc7otgs></a> <h1 data-astro-cid-mmc7otgs>
 To get started, open the <code data-astro-cid-mmc7otgs><pre data-astro-cid-mmc7otgs>src/pages</pre></code> directory in your project.
 </h1> <section id="links" data-astro-cid-mmc7otgs> <a class="button" href="https://docs.astro.build" data-astro-cid-mmc7otgs>Read our docs</a> <a href="https://astro.build/chat" data-astro-cid-mmc7otgs>Join our Discord <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 127.14 96.36" data-astro-cid-mmc7otgs><path fill="currentColor" d="M107.7 8.07A105.15 105.15 0 0 0 81.47 0a72.06 72.06 0 0 0-3.36 6.83 97.68 97.68 0 0 0-29.11 0A72.37 72.37 0 0 0 45.64 0a105.89 105.89 0 0 0-26.25 8.09C2.79 32.65-1.71 56.6.54 80.21a105.73 105.73 0 0 0 32.17 16.15 77.7 77.7 0 0 0 6.89-11.11 68.42 68.42 0 0 1-10.85-5.18c.91-.66 1.8-1.34 2.66-2a75.57 75.57 0 0 0 64.32 0c.87.71 1.76 1.39 2.66 2a68.68 68.68 0 0 1-10.87 5.19 77 77 0 0 0 6.89 11.1 105.25 105.25 0 0 0 32.19-16.14c2.64-27.38-4.51-51.11-18.9-72.15ZM42.45 65.69C36.18 65.69 31 60 31 53s5-12.74 11.43-12.74S54 46 53.89 53s-5.05 12.69-11.44 12.69Zm42.24 0C78.41 65.69 73.25 60 73.25 53s5-12.74 11.44-12.74S96.23 46 96.12 53s-5.04 12.69-11.43 12.69Z" data-astro-cid-mmc7otgs></path></svg> </a> </section> </section> </main> <a href="https://astro.build/blog/astro-5/" id="news" class="box" data-astro-cid-mmc7otgs> <svg width="32" height="32" fill="none" xmlns="http://www.w3.org/2000/svg" data-astro-cid-mmc7otgs><path d="M24.667 12c1.333 1.414 2 3.192 2 5.334 0 4.62-4.934 5.7-7.334 12C18.444 28.567 18 27.456 18 26c0-4.642 6.667-7.053 6.667-14Zm-5.334-5.333c1.6 1.65 2.4 3.43 2.4 5.333 0 6.602-8.06 7.59-6.4 17.334C13.111 27.787 12 25.564 12 22.666c0-4.434 7.333-8 7.333-16Zm-6-5.333C15.111 3.555 16 5.556 16 7.333c0 8.333-11.333 10.962-5.333 22-3.488-.774-6-4-6-8 0-8.667 8.666-10 8.666-20Z" fill="#111827" data-astro-cid-mmc7otgs></path></svg> <h2 data-astro-cid-mmc7otgs>What's New in Astro 5.0?</h2> <p data-astro-cid-mmc7otgs>
 From content layers to server islands, click to learn more about the new features and

dist/js/binary/unsigned-binary.js

@@ -0,0 +1,115 @@
+// 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();

dist/js/tools/unsigned-binary.js

@@ -0,0 +1,72 @@
+// 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();
+});

dist/styles.css

@@ -0,0 +1,96 @@
+/* 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); }