What is the difference between Asynchronous and Synchronous Communication?

YasminRadwan26

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2022-06-23

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C programming, Interview questions, C programming Interview-questions,

YasminRadwan26

2022-06-23

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Answer:

There are the following differences between asynchronous and synchronous communication.

Asynchronous Communication	Synchronous Communication
There is no common clock signal between the sender and receivers.	Communication is done by a shared clock.
Sends 1 byte or character at a time.	Sends data in the form of blocks or frames.
Slow as compare to synchronous communication.	Fast as compare to asynchronous communication.
Overhead due to start and stop bit.	Less overhead.
Ability to communicate long distance.	Less as compared to asynchronous communication.
A start and stop bit used for data synchronization.	A shared clock is used for data synchronization.
Economical	Costly
RS232, RS485	I2C, SPI.

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