🔌 Truth Table to Logic Diagram Generator

🎯 Getting Started

1. Configure Variables: Select the number of input variables (2-4) for your truth table.

2. Fill Truth Table: Click output cells to toggle between 0 and 1.

3. Generate Circuit: The tool automatically generates the logic diagram and shows the gate count.

📐 Truth Table to Circuit

The tool converts your truth table into a logic circuit using the following process:

• Identify Minterms: Finds all rows where output = 1
• Generate Product Terms: Creates AND gates for each minterm
• Combine with OR: Connects all product terms with OR gates
• Add Inverters: Includes NOT gates for negated inputs

🔧 Gate Count Estimator

The gate count estimator helps you plan physical IC chips needed:

• NOT Gates: Typically 6 gates per 7404 IC
• AND Gates: Varies by inputs (7408 for 2-input: 4 gates, 7411 for 3-input: 3 gates)
• OR Gates: Similar to AND gates (7432 for 2-input: 4 gates)
• NAND Gates: Universal gate - 4 gates per 7400 IC
• IC Recommendations: Shows suggested chip types and quantities

⚡ NAND-Only Mode (Universal Gate)

Enable this mode to see the circuit implemented using only NAND gates:

• NOT: Implemented as A NAND A (1 NAND gate)
• AND: Implemented as (A NAND B) NAND (A NAND B) (2 NAND gates)
• OR: Implemented as (A NAND A) NAND (B NAND B) (3+ NAND gates)
• Use Case: Shows how any logic circuit can be built with a single IC type (7400)
• Educational Value: Demonstrates the universality of NAND gates

💡 Understanding the Diagram

• Input Lines: Your variables (A, B, C, D) shown on the left
• NOT Gates: Triangle with circle - inverts the signal
• AND Gates: D-shaped - outputs 1 only if all inputs are 1
• OR Gates: Curved shield - outputs 1 if any input is 1
• NAND Gates: D-shaped with bubble - inverted AND (universal gate)
• Output: Final result shown on the right labeled F or Y
• Color-Coded Wires: Follow signals by color from input to output

🎓 Educational Context

This tool bridges the gap between Boolean math and physical circuits:

• See how truth tables translate to hardware
• Understand the relationship between Boolean expressions and gates
• Plan breadboard circuits with accurate IC counts
• Visualize Sum of Products (SOP) form as a circuit