Digital Logic
Gate
A fundamental digital circuit element that performs a basic Boolean operation on one or more inputs.
Detailed Explanation
Logic gates (AND, OR, NOT, NAND, NOR, XOR, XNOR) are the building blocks of digital circuits. Each gate implements a Boolean function. NAND and NOR are universal gates—any Boolean function can be built from either alone.
Physical gates are implemented with transistors. CMOS technology uses complementary NMOS and PMOS transistors for low static power. Gate delay varies with transistor sizing, load capacitance, and input patterns.