Explain logic gates.

(N/A) logic gate is a digital circuit that implements a specific logical function. It operates based on a defined logical relationship between the input and output voltages.
They are called 'gates' because they control the flow of information based on logical conditions.
The five common logic gates are $NOT$,$AND$,$OR$,$NAND$,and $NOR$. Each logic gate is represented by a unique symbol,and its behavior is defined by its truth table.
$A$ truth table is a table that lists all possible input combinations and their corresponding output values for a logic gate.
The Boolean expression provides the mathematical representation of the operation performed by a specific logic gate.
Logic gates are constructed using semiconductor devices,such as diodes and transistors.