Cambridge O Level Computer Science · Syllabus 2210 · Boolean Logic
NOR Gate
What is NOR Gate?
A two-input logic gate whose output is the inverse of OR: it is 1 only when both inputs are 0 and 0 in every other case; its symbol is the OR shield shape with a small inversion circle on the output, and it is written X = A NOR B.
This definition is part of the Boolean Logic chapter in Cambridge O Level Computer Science.
Reviewed by Academiq Edu Instructor PanelLast reviewed Syllabus 2026-2028

