Gate theory
A NOR gate is the inverse of an OR gate and produces a high output only when all inputs are low.
Computer Science Logic Gates
NOR Gate Simulator With Truth Table
Use the NOR gate simulator to see why the output is 1 only when every input is 0. Learn the Boolean expression, input-output behavior, and digital circuit logic through a focused OpenLabs interactive simulator.
Logic Gate Lab
NOR Gate
NOR
Y = (A + B)'
Truth Table
| A | B | Output |
|---|---|---|
| 0 | 0 | 1 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 0 |
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 NOR gate logic through live input-output behavior
NOR logic is another universal gate pattern, meaning it can be used to construct every other basic logic function. The simulator helps students connect symbols, Boolean expressions, truth tables, and circuit output without needing physical hardware.
Understand the NOR gate truth table and Boolean expression.
Compare NOR output with OR output.
Learn why NOR is a universal logic gate.
Practice reading gate outputs from input combinations.
Where this gate is used
- Universal logic construction
- Control circuits
- Digital electronics experiments
- Boolean algebra practice
How the interactive lab works
Open the NOR 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.
NOR Gate FAQs
What is a NOR gate?
A NOR gate is a digital logic gate that outputs 1 only when all inputs are 0.
What is the Boolean expression of a NOR gate?
The common Boolean expression is Y = (A + B)', which means NOT OR.
Is NOR a universal gate?
Yes. NOR gates can be combined to build all other basic logic gates.
Ready to test the NOR gate?
Toggle inputs, verify the truth table, and build confidence with digital logic through a live OpenLabs simulator.