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Compare the Parallel Data Transfer & Serial Data Transfer.
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Parallel Data Transfer Serial Data Transfer
Multiple data bits are transferred at an instance. Only one data bit is transferred at an instance.
Multiple lines are required to be connected between transmitter and receiver. Maximum two lines are connected between transmitter and receiver.
It increases the data transfer speed. It decreases the data transfer speed.
It is used only for small distance communication. It is generally used for long distance communication.
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