closedsource/circuit2.html at master · pikatchu/closedsource · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>4-bit Ripple Carry Incrementer (2X Scaled)</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            text-align: center;
        }
        .inputs {
            margin: 20px;
        }
        canvas {
            border: 1px solid black;
            display: block;
            margin: auto;
        }
    </style>
</head>
<body onload="updateCircuit()">
    <h1>4-bit Ripple Carry Incrementer (2X Size)</h1>
    <div class="inputs">
        <label>Bit 3: <input type="checkbox" id="bit3" onchange="updateCircuit()"></label>
        <label>Bit 2: <input type="checkbox" id="bit2" onchange="updateCircuit()"></label>
        <label>Bit 1: <input type="checkbox" id="bit1" onchange="updateCircuit()"></label>
        <label>Bit 0: <input type="checkbox" id="bit0" onchange="updateCircuit()"></label>
    </div>
    <canvas id="circuitCanvas" width="600" height="800"></canvas>

    <script>
        function getInputBits() {
            return [
                document.getElementById("bit0").checked ? 1 : 0,
                document.getElementById("bit1").checked ? 1 : 0,
                document.getElementById("bit2").checked ? 1 : 0,
                document.getElementById("bit3").checked ? 1 : 0,
            ];
        }

        function rippleCarryIncrement(bits) {
            let carry = 1;
            let result = [];
            let carries = [carry];
            for (let i = 0; i < 4; i++) {
                let sum = bits[i] ^ carry;
                carry = bits[i] & carry;
                result.push(sum);
                carries.push(carry);
            }
            return { result, carries };
        }

        function updateCircuit() {
            let bits = getInputBits();
            let { result, carries } = rippleCarryIncrement(bits);
            drawCircuit(bits, result, carries);
        }

        function drawCircuit(bits, result, carries) {
            let canvas = document.getElementById("circuitCanvas");
            let ctx = canvas.getContext("2d");
            ctx.clearRect(0, 0, canvas.width, canvas.height);
            ctx.font = "16px Arial";  // Increased font size

            let startX = 150;
            let startY = 100;
            let spacingY = 174;
            let gateRadius = 30;
            let andYOffset = 60;
            let andXOffset = -40;
            let inputOffsetX = 100;
            let outputOffsetX = 100;
            let carryX = startX + 100;
            let carryY = startY - 80;
            let carryLineEndY = startY - gateRadius - 10;

            ctx.fillText("1", carryX - 10, carryY);
            ctx.beginPath();
            ctx.moveTo(carryX, carryY + 10);
            ctx.lineTo(carryX, carryLineEndY);
            ctx.stroke();

            for (let i = 0; i < 4; i++) {
                let bitX = startX - inputOffsetX;
                let bitY = startY + i * spacingY;

                ctx.fillText("B" + i + "=" + bits[i], bitX - 20, bitY);

                let xorX = startX + 100;
                let andX = xorX + andXOffset;
                let outputX = xorX + outputOffsetX;

                ctx.beginPath();
                ctx.moveTo(bitX, bitY);
                ctx.lineTo(xorX - gateRadius, bitY);
                ctx.stroke();

                // Add a '1' under B0 and connect horizontally to the AND gate
                if (i === 0) {
                    let extraCarryY = bitY + andYOffset;
                    let andLeftX = andX - gateRadius - 20;
                    ctx.fillText("1", andLeftX - 20, extraCarryY);
                    ctx.beginPath();
                    ctx.moveTo(andLeftX, extraCarryY);
                    ctx.lineTo(andX - gateRadius, extraCarryY);
                    ctx.stroke();
                }

                // Draw line from input to AND gate
                ctx.beginPath();
                ctx.moveTo(bitX, bitY);
                ctx.lineTo(andX - gateRadius, bitY + andYOffset);
                ctx.stroke();

                ctx.beginPath();
                ctx.arc(xorX, bitY, gateRadius, 0, 2 * Math.PI);
                ctx.fillText("XOR", xorX - 16, bitY + 4);
                ctx.stroke();

                ctx.beginPath();
                ctx.moveTo(xorX + gateRadius, bitY);
                ctx.lineTo(outputX, bitY);
                ctx.stroke();

                ctx.beginPath();
                ctx.arc(andX, bitY + andYOffset, gateRadius, 0, 2 * Math.PI);
                ctx.fillText("AND", andX - 16, bitY + andYOffset + 6);
                ctx.stroke();

                if (i < 3) {
                    let nextXorY = startY + (i + 1) * spacingY;
                    let nextAndY = nextXorY + andYOffset;

                    ctx.beginPath();
                    ctx.moveTo(andX, bitY + andYOffset + gateRadius);
                    ctx.lineTo(andX, nextAndY - gateRadius);
                    ctx.stroke();

                    ctx.beginPath();
                    ctx.moveTo(andX, bitY + andYOffset + gateRadius);
                    ctx.lineTo(xorX, nextXorY - gateRadius);
                    ctx.stroke();
                }

                ctx.fillText("S" + i + "=" + result[i], outputX + 20, bitY);
            }
        }
    </script>
</body>
</html>