logic gate
Noun: A logic gate is a fundamental building block of a digital circuit. It is an electronic device that performs a basic logical operation on one or more binary inputs (typically represented as 0 or 1, LOW or HIGH, FALSE or TRUE) to produce a single binary output. The output is determined by a specific Boolean function.
A logic gate implements a Boolean logic function. It is the physical realization of an elementary Boolean operation, forming the basis of digital electronics and computer processors. - The design of the central processing unit (CPU) relies on the interconnection of millions of logic gates. - An AND logic gate only outputs a HIGH signal (1) if all of its inputs are HIGH. - Engineers use truth tables to define the function of each type of logic gate.
- Logic gate abstraction: In computer science and engineering, a logic gate is often treated as a perfect, idealized component when designing complex circuits, before considering physical limitations like signal delay or power consumption.
- Universal gates: Certain logic gates, like the NAND gate and the NOR gate, are called "universal" because any Boolean function can be implemented using only multiple copies of that single gate type.
- Gate (noun, in electronics): Often used as a shorter form within technical contexts (e.g., "a NAND gate," "gate array").
- Boolean gate (noun): A synonym emphasizing the implementation of Boolean algebra.
- Digital gate (noun): A synonym emphasizing its role in digital (as opposed to analog) circuits.
- AND gate: Output is 1 only if all inputs are 1.
- OR gate: Output is 1 if at least one input is 1.
- NOT gate (inverter): Output is the inverse (opposite) of its single input.
- NAND gate: Output is 0 only if all inputs are 1 (NOT-AND).
- NOR gate: Output is 1 only if all inputs are 0 (NOT-OR).
- XOR gate (exclusive OR): Output is 1 if the inputs are different.
- Truth table: A table that lists all possible input combinations to a logic gate and shows the corresponding output for each.
- Boolean algebra: The branch of algebra and mathematics used to analyze and simplify digital (logic) circuits.
- Integrated circuit (IC): A chip that contains many interconnected logic gates and other components.
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a computer circuit with several inputs but only one output that can be activated by particular combinations of inputs
