Saturday, 7 October 2017

Difference Between Serial and Parallel Transmission

Serial Transmission

1.     Data is sent bit by bit from one computer to another
2.     Each bit has its clock pulse rate.
3.     Bi-direction
4.     Serial Transmission has two subclasses Synchronous and Asynchronous

5.     Uses One channel for a bit


Parallel Transmission

1.     In Parallel Transmission, various bits are sent together simultaneously with a single clock pulse.
2.     So multiple channels for multiple bits



Key Differences Between Serial And Parallel Transmission

1.     Serial transmission requires a single line to communicate and transfer data whereas, parallel transmission requires multiple lines.
2.     Serial transmission used for long distance communication whereas, the parallel transmission used for shorter distance.
3.     Error and noise are least in serial as compared to parallel transmission. Since one bit follows another in Serial Transmission whereas, in Parallel Transmission multiple bits are sent together.
4.     Parallel transmission is faster as the data is transmitted using multiples lines whereas, in Serial transmission data flows through a single wire.
5.     Serial Transmission is full duplex as the sender can send as well as receive the data whereas, Parallel Transmission is half duplex since the data is either sent or received.
6.     Serial transmission cables are thinner, longer and economical in comparison with the Parallel Transmission cables.
7.     Serial Transmission is reliable and straightforward whereas, Parallel Transmission is unreliable and complicated.

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