noun
NOR circuit
A digital logic circuit that outputs true only when all inputs are false. Used in electronics and computer engineering.
ＮＯＲ回路は、すべての入力が０のときだけ１を出力する。
A NOR circuit outputs 1 only when all inputs are 0.
NAND circuit outputs 0 only when all inputs are 1, while NOR circuit outputs 1 only when all inputs are 0.
OR circuit outputs 1 when at least one input is 1; NOR is its negation.
From English 'NOR' (a portmanteau of 'NOT' and 'OR') combined with 回路 (circuit).