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<html lang="en">
<!-- InstanceBegin template="/Templates/interactive.dwt" codeOutsideHTMLIsLocked="true" -->
<head>
<link rel="stylesheet" href="https://isocialpractice.github.io/interactive-html/css/style.css">
<link rel="icon" type="image/svg+xml" href="https://isocialpractice.github.io/interactive-html/img/favicon.svg">
<!-- InstanceBeginEditable name="head" -->
<title>Interactive Tools | Educational Calculators, Simulators & Computer Science Tools</title>
<meta name="description" content="Free interactive electronics calculators, computer science learning tools, and educational simulators. Includes 555 timer, resistor, LED tools, binary converters, and logic gates.">
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
font-family: 'Inter', 'Segoe UI', -apple-system, system-ui, sans-serif;
background: linear-gradient(135deg, #E6F2FF 0%, #F5F7FA 100%);
color: #1A1A1A;
line-height: 1.6;
min-height: 100vh;
}
/* Header */
header {
background: #FFFFFF;
box-shadow: 0 2px 8px rgba(0,0,0,0.08);
padding: 24px 0;
margin-bottom: 48px;
}
.header-content {
max-width: 1200px;
margin: 0 auto;
padding: 0 24px;
text-align: center;
}
h1 {
color: #004080;
font-size: 36px;
font-weight: 700;
margin-bottom: 12px;
}
.tagline {
color: #6C757D;
font-size: 18px;
font-weight: 500;
}
/* Container */
.container {
max-width: 1200px;
margin: 0 auto;
padding: 0 24px 48px;
}
/* Search */
.search-container {
margin-bottom: 40px;
}
.search-box {
width: 100%;
max-width: 600px;
margin: 0 auto;
position: relative;
}
.search-input {
width: 100%;
padding: 16px 48px 16px 20px;
font-size: 16px;
border: 2px solid #E1E4E8;
border-radius: 12px;
background: #FFFFFF;
transition: all 0.3s;
font-family: inherit;
}
.search-input:focus {
outline: none;
border-color: #0066CC;
box-shadow: 0 0 0 3px rgba(0,102,204,0.1);
}
.search-icon {
position: absolute;
right: 16px;
top: 50%;
transform: translateY(-50%);
color: #6C757D;
font-size: 20px;
margin-top: 10px;
}
/* Category Section */
.category {
margin-bottom: 48px;
}
.category-header {
display: flex;
align-items: center;
margin-bottom: 24px;
padding-bottom: 12px;
border-bottom: 3px solid #0066CC;
}
.category-icon {
font-size: 28px;
margin-right: 12px;
}
.category-title {
color: #004080;
font-size: 24px;
font-weight: 700;
}
/* Tool Cards Grid */
.tools-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
gap: 24px;
}
.tool-card {
background: #FFFFFF;
border-radius: 16px;
padding: 24px;
box-shadow: 0 4px 12px rgba(0,0,0,0.08);
border: 1px solid #E1E4E8;
transition: all 0.3s;
text-decoration: none;
color: inherit;
display: block;
}
.tool-card:hover {
transform: translateY(-4px);
box-shadow: 0 8px 24px rgba(0,102,204,0.2);
border-color: #0066CC;
}
.tool-icon {
width: 56px;
height: 56px;
background: linear-gradient(135deg, #0066CC 0%, #004080 100%);
border-radius: 12px;
display: flex;
align-items: center;
justify-content: center;
font-size: 28px;
margin-bottom: 16px;
color: #FFFFFF;
}
.tool-title {
color: #1A1A1A;
font-size: 18px;
font-weight: 700;
margin-bottom: 8px;
}
.tool-description {
color: #6C757D;
font-size: 14px;
line-height: 1.5;
}
.tool-badge {
display: inline-block;
background: #E6F2FF;
color: #0066CC;
padding: 4px 12px;
border-radius: 6px;
font-size: 12px;
font-weight: 600;
margin-top: 12px;
}
/* Footer */
footer {
background: #FFFFFF;
border-top: 1px solid #E1E4E8;
padding: 32px 0;
margin-top: 48px;
text-align: center;
}
.footer-content {
max-width: 1200px;
margin: 0 auto;
padding: 0 24px;
color: #6C757D;
font-size: 14px;
}
.footer-links {
margin-top: 16px;
}
.footer-links a {
color: #0066CC;
text-decoration: none;
margin: 0 12px;
font-weight: 500;
}
.footer-links a:hover {
text-decoration: underline;
}
/* Responsive */
@media (max-width: 768px) {
h1 {
font-size: 28px;
}
.tagline {
font-size: 16px;
}
.tools-grid {
grid-template-columns: 1fr;
}
.category-title {
font-size: 20px;
}
}
/* Hidden class for search filter */
.hidden {
display: none !important;
}
</style>
<!-- InstanceEndEditable -->
</head>
<body>
<nav class="site-nav">
<div class="nav-container">
<a href="https://isocialpractice.github.io/interactive-html/index.html" class="nav-brand">
<img src="https://isocialpractice.github.io/interactive-html/img/favicon.svg" alt="Electronics Tools" class="nav-logo">
<span>Interactive Tools</span>
</a>
<button class="nav-toggle" aria-label="Toggle menu" onclick="document.querySelector('.nav-menu').classList.toggle('active')">☰</button>
<ul class="nav-menu">
<li class="nav-item">
<a href="https://isocialpractice.github.io/interactive-html/index.html" class="nav-link"><span>🏠</span> <span>Home</span></a>
</li>
<li class="nav-item nav-dropdown">
<a href="https://isocialpractice.github.io/interactive-html/555/index.html" class="nav-link dropdown-toggle"><span>⏱️</span> <span>555 Timer</span></a>
<div class="dropdown-menu">
<a href="https://isocialpractice.github.io/interactive-html/555/555-timer-simulator.html" class="nav-link">Interactive Simulator</a>
<a href="https://isocialpractice.github.io/interactive-html/555/555-astable-calculator.html" class="nav-link">Astable Calculator</a>
<a href="https://isocialpractice.github.io/interactive-html/555/555-monostable-simulator.html" class="nav-link">Monostable Simulator</a>
<a href="https://isocialpractice.github.io/interactive-html/555/555-logic-simulator.html" class="nav-link">Clock Logic Simulator</a>
</div>
</li>
<li class="nav-item nav-dropdown">
<a href="https://isocialpractice.github.io/interactive-html/electronics/index.html#resistorTools" class="nav-link dropdown-toggle"><span>🔌</span> <span>Resistors</span></a>
<div class="dropdown-menu">
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-resistor-calculator.html" class="nav-link">Color Code Calculator</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-parallel-resistor-calculator.html" class="nav-link">Parallel Calculator</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-fusible-resistor-calculator.html" class="nav-link">Fusible Calculator</a>
</div>
</li>
<li class="nav-item nav-dropdown">
<a href="https://isocialpractice.github.io/interactive-html/electronics/index.html#ledAndPowerTools" class="nav-link dropdown-toggle"><span>💡</span> <span>LED & Power</span></a>
<div class="dropdown-menu">
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-ohms-law-calculator.html" class="nav-link">Ohm's Law</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-led-current-calculator.html" class="nav-link">LED Calculator</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-voltage-divider-calculator.html" class="nav-link">Voltage Divider</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-varistor-simulator.html" class="nav-link">Varistor Simulator</a>
</div>
</li>
<li class="nav-item nav-dropdown">
<a href="https://isocialpractice.github.io/interactive-html/electronics/index.html#components" class="nav-link dropdown-toggle"><span>🔧</span> <span>Components</span></a>
<div class="dropdown-menu">
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-potentiometer-simulator.html" class="nav-link">Potentiometer Simulator</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-potentiometer-decoder.html" class="nav-link">Potentiometer Decoder</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-surface-mount-decoder.html" class="nav-link">SMD Decoder</a>
<a href="https://isocialpractice.github.io/interactive-html/electronics/electronics-breadboard-simulator.html" class="nav-link">Breadboard Simulator</a>
</div>
</li>
<li class="nav-item nav-dropdown">
<a href="https://isocialpractice.github.io/interactive-html/general/index.html" class="nav-link dropdown-toggle"><span>📐</span> <span>General</span></a>
<div class="dropdown-menu">
<a href="https://isocialpractice.github.io/interactive-html/general/general-volume-measurement.html" class="nav-link">Volume Measurement</a>
<a href="https://isocialpractice.github.io/interactive-html/general/general-area-and-perimeter-calculator.html" class="nav-link">Area & Perimeter</a>
</div>
</li>
<li class="nav-item nav-dropdown">
<a href="https://isocialpractice.github.io/interactive-html/computerScience/index.html" class="nav-link dropdown-toggle"><span>💻</span> <span>Computer Science</span></a>
<div class="dropdown-menu">
<a href="https://isocialpractice.github.io/interactive-html/computerScience/computerScience-number-converter.html" class="nav-link">Number Converter</a>
<a href="https://isocialpractice.github.io/interactive-html/computerScience/computerScience-logic-gates.html" class="nav-link">Logic Gates</a>
<a href="https://isocialpractice.github.io/interactive-html/computerScience/computerScience-stackPointer.html" class="nav-link">Stack Pointer Visualizer</a>
<a href="https://isocialpractice.github.io/interactive-html/computerScience/computerScience-binaryHexMemoryMapConverter.html" class="nav-link">Binary/Hex Memory Map</a>
<a href="https://isocialpractice.github.io/interactive-html/computerScience/computerScience-chipTimingWaveform.html" class="nav-link">Chip Timing Waveform</a>
</div>
</li>
</ul>
</div>
</nav>
<!-- InstanceBeginEditable name="page" -->
<header style="margin-top: -72px; padding-top: 96px;">
<div class="header-content">
<h1>⚡ Interactive HTML Tools</h1>
<p class="tagline">Free calculators, simulators, and computer science tools for learning and design</p>
</div>
</header>
<div class="container">
<!-- Search Box -->
<div class="search-container">
<div class="search-box">
<input type="text" class="search-input" id="searchInput" placeholder="Search for a tool..." autocomplete="off">
<span class="search-icon">🔍</span>
</div>
</div>
<!-- 555 Timer Tools -->
<section class="category" data-category="555">
<div class="category-header">
<span class="category-icon">⏱️</span>
<h2 class="category-title"><a href="555/index.html">555 Timer Tools</a></h2>
<a href="555/index.html" style="margin-left: auto; color: #FF8C00; text-decoration: none; font-weight: 600; font-size: 14px;">View All →</a>
</div>
<div class="tools-grid">
<a href="555/555-timer-simulator.html" class="tool-card" data-keywords="555 timer simulator interactive astable monostable bistable">
<div class="tool-icon">⚙️</div>
<h3 class="tool-title">555 Timer Interactive Simulator</h3>
<p class="tool-description">Explore astable, monostable, and bistable modes with real-time waveform visualization and component value adjustments.</p>
<span class="tool-badge">Interactive</span>
</a>
<a href="555/555-astable-calculator.html" class="tool-card" data-keywords="555 astable calculator frequency duty cycle">
<div class="tool-icon">📊</div>
<h3 class="tool-title">555 Astable Calculator</h3>
<p class="tool-description">Calculate frequency, duty cycle, and timing values for 555 timer circuits in astable mode.</p>
<span class="tool-badge">Calculator</span>
</a>
<a href="555/555-monostable-simulator.html" class="tool-card" data-keywords="555 monostable one-shot pulse timer">
<div class="tool-icon">⏲️</div>
<h3 class="tool-title">555 Monostable Simulator</h3>
<p class="tool-description">Simulate one-shot pulse generation with adjustable timing resistors and capacitors.</p>
<span class="tool-badge">Simulator</span>
</a>
<a href="555/555-logic-simulator.html" class="tool-card" data-keywords="555 logic clock computer timing">
<div class="tool-icon">💻</div>
<h3 class="tool-title">Computer Clock Logic Simulator</h3>
<p class="tool-description">Interactive 555-based computer clock with adjustable frequency and logic level visualization.</p>
<span class="tool-badge">Advanced</span>
</a>
</div>
</section>
<!-- Resistor Tools -->
<section class="category" data-category="resistor">
<div class="category-header">
<span class="category-icon">🔌</span>
<h2 class="category-title"><a href="electronics/index.html#resistorTools">Resistor Tools</a></h2>
<a href="electronics/index.html" style="margin-left: auto; color: #0066CC; text-decoration: none; font-weight: 600; font-size: 14px;">View All →</a>
</div>
<div class="tools-grid">
<a href="electronics/electronics-resistor-calculator.html" class="tool-card" data-keywords="resistor color code calculator 4-band 5-band">
<div class="tool-icon">🎨</div>
<h3 class="tool-title">Resistor Color Code Calculator</h3>
<p class="tool-description">Decode 4-band and 5-band resistor color codes with visual representation and tolerance information.</p>
<span class="tool-badge">Essential</span>
</a>
<a href="electronics/electronics-parallel-resistor-calculator.html" class="tool-card" data-keywords="resistor parallel calculator equivalent resistance">
<div class="tool-icon">➗</div>
<h3 class="tool-title">Parallel Resistor Calculator</h3>
<p class="tool-description">Calculate equivalent resistance for multiple resistors in parallel configuration.</p>
<span class="tool-badge">Calculator</span>
</a>
<a href="electronics/electronics-fusible-resistor-calculator.html" class="tool-card" data-keywords="fusible resistor fuse calculator safety">
<div class="tool-icon">🔥</div>
<h3 class="tool-title">Fusible Resistor Calculator</h3>
<p class="tool-description">Calculate safe operating limits and fusing current for fusible resistors in power circuits.</p>
<span class="tool-badge">Safety</span>
</a>
</div>
</section>
<!-- LED & Power Tools -->
<section class="category" data-category="led">
<div class="category-header">
<span class="category-icon">💡</span>
<h2 class="category-title"><a href="electronics/index.html#ledAndPowerTools">LED & Power Tools</a></h2>
<a href="electronics/index.html" style="margin-left: auto; color: #0066CC; text-decoration: none; font-weight: 600; font-size: 14px;">View All →</a>
</div>
<div class="tools-grid">
<a href="electronics/electronics-ohms-law-calculator.html" class="tool-card" data-keywords="ohm's law calculator voltage current resistance power">
<div class="tool-icon">⚡</div>
<h3 class="tool-title">Ohm's Law Calculator</h3>
<p class="tool-description">Calculate voltage, current, resistance, and power using Ohm's Law with interactive formula display.</p>
<span class="tool-badge">Fundamental</span>
</a>
<a href="electronics/electronics-led-current-calculator.html" class="tool-card" data-keywords="led current limiting resistor calculator">
<div class="tool-icon">💡</div>
<h3 class="tool-title">LED Current Limiting Resistor Calculator</h3>
<p class="tool-description">Calculate the perfect current limiting resistor for your LED circuits with voltage drop and power dissipation.</p>
<span class="tool-badge">Popular</span>
</a>
<a href="electronics/electronics-voltage-divider-calculator.html" class="tool-card" data-keywords="voltage divider calculator resistor ratio">
<div class="tool-icon">📉</div>
<h3 class="tool-title">Voltage Divider Calculator</h3>
<p class="tool-description">Design voltage divider circuits with automatic resistor value calculation and output voltage prediction.</p>
<span class="tool-badge">Design</span>
</a>
<a href="electronics/electronics-varistor-simulator.html" class="tool-card" data-keywords="varistor mov surge protection simulator">
<div class="tool-icon">🛡️</div>
<h3 class="tool-title">Varistor (MOV) Simulator</h3>
<p class="tool-description">Simulate voltage-dependent resistor behavior for surge protection circuit design.</p>
<span class="tool-badge">Protection</span>
</a>
</div>
</section>
<!-- Component Tools -->
<section class="category" data-category="component">
<div class="category-header">
<span class="category-icon">🔧</span>
<h2 class="category-title"><a href="electronics/index.html#components">Component Tools</a></h2>
<a href="electronics/index.html" style="margin-left: auto; color: #0066CC; text-decoration: none; font-weight: 600; font-size: 14px;">View All →</a>
</div>
<div class="tools-grid">
<a href="electronics/electronics-potentiometer-simulator.html" class="tool-card" data-keywords="potentiometer simulator variable resistor pot">
<div class="tool-icon">🎛️</div>
<h3 class="tool-title">Potentiometer Simulator</h3>
<p class="tool-description">Interactive potentiometer simulator with real-time resistance and voltage readings as you adjust the dial.</p>
<span class="tool-badge">Interactive</span>
</a>
<a href="electronics/electronics-potentiometer-decoder.html" class="tool-card" data-keywords="potentiometer code decoder marking">
<div class="tool-icon">🔍</div>
<h3 class="tool-title">Potentiometer Code Decoder</h3>
<p class="tool-description">Decode potentiometer markings and 3-digit codes to determine resistance values and tolerances.</p>
<span class="tool-badge">Reference</span>
</a>
<a href="electronics/electronics-surface-mount-decoder.html" class="tool-card" data-keywords="smd surface mount resistor decoder eia-96">
<div class="tool-icon">📱</div>
<h3 class="tool-title">Surface Mount Resistor Decoder</h3>
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