Select Logic Gate
Input Signals
Truth Table
About Logic Gate Simulator
What are Logic Gates?
Logic gates are the fundamental building blocks of digital circuits that perform Boolean logic operations. Each gate produces a deterministic output based on its input signals. Modern CPUs, memory, and all digital circuits are built from combinations of logic gates.
7 Basic Logic Gates
- AND: Output 1 only when all inputs are 1
- OR: Output 1 when any input is 1
- NOT: Inverts input, 0 becomes 1 and vice versa
- XOR: Output 1 when inputs differ
- NAND: AND inverted, a universal gate
- NOR: OR inverted, a universal gate
- XNOR: XOR inverted, output 1 when inputs match
Logic Gate Simulator in 3 steps
1. Select the logic gate type to simulate
2. Click input switches to toggle between 0 and 1
3. View real-time output and complete truth table
When to use Logic Gate Simulator
Digital Circuit Learning: Understand gate operations and verify truth tables through interactive experimentation.
Circuit Design Verification: Quickly verify logic gate combinations for digital circuit design.
Programming Logic: Understand the gate-level principles behind bitwise operations (&, |, ^, ~).
FAQ
What are logic gates?
Fundamental building blocks of digital circuits performing Boolean operations. Common types: AND, OR, NOT, XOR, NAND, NOR, XNOR.
AND vs OR gate?
AND outputs 1 only when all inputs are 1. OR outputs 1 when any input is 1. AND(1,0)=0, OR(1,0)=1.
Why is NAND a universal gate?
NAND can implement all other gates: NOT=NAND(A,A), AND=NOT(NAND(A,B)), OR=NAND(NOT(A),NOT(B)). NOR has the same property.
XOR gate applications?
Parity checking, adder circuits, cryptography, controlled inverters.
How to build an adder?
Half adder: Sum=A XOR B, Carry=A AND B. Full adders cascade into multi-bit adders, the foundation of CPU arithmetic.
What is gate delay?
Propagation delay (nanoseconds) through each gate. Cumulative delays determine max frequency and can cause glitches.