Computer bus

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A Computer bus (often simply called Bus) is part of most computers. Its role is to transfer data, signals or power between some of the components that make up a computer.

Width:The size or width of a bus is how many bits it carries in parallel. Common bus sizes are: 4 bits, 8 bits, 12 bits, 16 bits, 24 bits, 32 bits, 64 bits, 80 bits, 96 bits, and 128 bits. Such buses are in wide use: