人在江湖 身不由己
NAND gate - Wikipedia, the free encyclopedia 叮叮噹!叮叮噹!鈴聲多響亮!In digital electronics, a NAND gate (Negated AND or NOT AND) is a logic gate which produces an output that is false only if all its inputs are true; thus its output is complement to that of the AND gate. A LOW (0) output results only if both the inputs to...
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