Logic Gates
Elementary digital electronic building blocks that perform Boolean logical operations on one or more binary inputs to yield a single binary output.
Governing formula
AND: Y = A·B; OR: Y = A + B; NOT: Y = Ā; NAND: Y = (A·B)̄
SI unit
Binary (0 or 1)
In depth
Constructed from semiconductor transistors functioning as electronic switches. NAND and NOR gates are universal logic gates capable of implementing any digital Boolean logic function.
Examples in the real world
Billions of microscopic transistor logic gates integrated on microchips powering modern computer CPUs and microprocessors.