AND, OR, NAND, and NOR logical gates

Details AND, OR, NAND, and NOR logical gates AND, OR, NAND, and NOR logical gates

2007-08-14

2007-08-14

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Function of and, or, nand, nor, or not

Field-effect transistor

C326S114000

Reexamination Certificate

active

11284562

ABSTRACT:
A logic family consisting of four basic logical circuits performing AND, OR, NAND and NOR functions is disclosed. The AND and OR logic circuits function without a power supply and complementary input signals. The NAND and NOR logic circuits function without complementary input signals. The AND and OR logic circuits are constructed using two MOS (Metal Oxide Semiconductor) transistors, namely, one P-channel MOS transistor and one N-channel MOS transistor. The NAND and NOR logic circuits are constructed using four MOS transistors, namely, two P-channel MOS transistors and two N-channel MOS transistors. The logic circuits may have higher speed, occupy less area and consume less power because power supply is not needed, complementary input signals are not used and fewer transistors are used. The logic circuits may have increased performance relative to CMOS (Complementary MOS) logic circuits, CPL (Complementary Pass Logic) circuits and DPL (Dual Pass Logic) circuits.

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