Logic Gates

A logic gate is a basic building block of a digital circuit. Most logic gates have two inputs and one output. At any time, every terminal is in one of the two binary conditions low (0) or high (1), shown by different voltage levels.

So, we can say that firstly, a circuit is a collection of transistors and resistors that do logic operations. Second, transistors make up logic gates. Third, logic gates make up circuits. Finally, circuits make up electronic systems.

There are seven basic logic gates: AND, OR, XOR, NOT, NAND, NOR, and XNOR.

This picture shows Logic Gates

logicgates.jpg

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