Gate theory
An XNOR gate is the inverse of an XOR gate and outputs 1 when its inputs are equal.
Computer Science Logic Gates
XNOR Gate Simulator With Truth Table
Use the XNOR gate simulator to see why the output is 1 when both inputs are the same. Learn the Boolean expression, input-output behavior, and digital circuit logic through a focused OpenLabs interactive simulator.
Logic Gate Lab
XNOR Gate
XNOR
Y = (A xor B)'
Truth Table
| A | B | Output |
|---|---|---|
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
Toggle the inputs in the lab to watch this table become live circuit behavior.
Input switching
Change binary inputs and observe how the output responds in real time.
Truth table
Map every possible input combination to the correct digital output.
Circuit logic
Connect Boolean algebra with the digital building blocks used inside computers.
Learn by simulating
Understand XNOR gate logic through live input-output behavior
XNOR logic is often used for equality checks because matching inputs produce a high output. The simulator helps students connect symbols, Boolean expressions, truth tables, and circuit output without needing physical hardware.
Understand XNOR truth table behavior.
Compare XNOR with XOR logic.
Recognize XNOR as equality detection logic.
Practice predicting outputs from matching and different inputs.
Where this gate is used
- Equality checking circuits
- Digital comparators
- Error detection logic
- Boolean algebra exercises
How the interactive lab works
Open the XNOR gate lab, toggle the binary input controls, and watch the output update immediately. The visual circuit and truth table make each Boolean result easier to verify.
XNOR Gate FAQs
What is an XNOR gate?
An XNOR gate outputs 1 when its inputs are equal and outputs 0 when they are different.
How is XNOR different from XOR?
XOR outputs 1 for different inputs, while XNOR outputs 1 for matching inputs.
Where is XNOR used?
XNOR gates are commonly used in equality checks, digital comparators, and error detection logic.
Ready to test the XNOR gate?
Toggle inputs, verify the truth table, and build confidence with digital logic through a live OpenLabs simulator.