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What is a bit?

Answer

A bit is the smallest possible unit of digital information, because it can have only two values, which can be interpreted as ON and OFF, or numerically as 0 and 1. You can group eight bits together with each one independently ON or OFF. Taken together, there 256 ON/OFF combinations, so they can represent the numbers from 0 to 255 or from -128 to +127, for example. The groups of eight are called bytes, and computer memories are organized in bytes.

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First answer by MurrayMarble. Last edit by MurrayMarble. Contributor trust: 65 [recommend contributor]. Question popularity: 10 [recommend question]

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