bits

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The basic form of binary data representation in a digital system.

a bit may be either high (1) or low (0).

This is usually represented electronically as +5 volts (yes) & (0) or 0 volts (no). 8 bits are called a byte and 2 bytes (16 bits) may be called a “word”. Figure below illustrates that a word represents the decimal numbers from 0 to 65,535