NOR Gate
The two-input NOR gate implements the complement of OR. NOR is functionally complete and can also form an active-HIGH SR latch through cross-coupled feedback.
Overview
The two-input NOR gate implements the complement of OR. NOR is functionally complete and two cross-coupled NOR gates can form an active-HIGH SR latch.
DigiSim Interface
| Direction | Pins | Behavior |
|---|---|---|
| Input | A, B | Two one-bit operands. |
| Output | Y | Driven complement of A OR B. |
Truth Table
A defined HIGH forces LOW even beside X; otherwise a relevant driven unknown produces X.
Released Z inputs follow Logic Lab's LOW sampling convention.
Simulation Boundary
The component is an atomic functional gate. It does not characterize a transistor network, logic family, voltage, current, fan-out, power, or device-specific timing.
Learning Path
Frequently Asked Questions
What is a NOR gate?
A NOR gate is an OR gate followed by a NOT gate. It outputs 1 only when all inputs are 0; any HIGH input makes the output 0.
What can I build with NOR gates?
NOR gates can express any Boolean function, and two cross-coupled NOR gates form a basic active-HIGH SR latch. Functional completeness does not by itself specify timing, storage, or a practical physical implementation.