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Difference Between Synchronous and Asynchronous Transmission

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Difference Between Synchronous and Asynchronous Transmission

S. Synchronous Asynchronous
No
.

1. In Synchronous transmission a common clock is shared by In Asynchronous transmission each


the transmitter and receiver to achieve synchronisation while character contains its own start and stop
data transmission. bits.

2. In Synchronous transmission data is sent in frames or blocks. In Asynchronous transmission data is sent
in the form of bytes or characters.

3. Synchronous transmission is faster, as a common clock is Asynchronous transmission is slower as


shared by the sender and receiver. each character has its own start and stop
bit.

4. Synchronous transmission is costlier. Asynchronous transmission is cheaper.

5. It is easy to design. It is complex.

6. In synchronous transmission there is no gap between the In asynchronous transmission there is a


data as they share a common clock. gap between the data due to the start and
stop bit feature.

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