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Parrallel and Serial transmission

Parrallel Transmission- a number of bits per data are transmitted simultanously over an equal number of channels/ wires. this allows the bits in a whole byte of information to be transfered together.

Serial transmission.

Bits are transfered one at a time over a single wire/ channel. This reduces the cost of the cables but gives a slower rate of english transfer.

Universal serial bus (USB)

Is a serial transmission method which was introduced by many of the connections to the computer look the same. Normally the usbs are used in a wide variety of devices such as mobile phones, memory sticks etc.

Data Exchange 2

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