Different between serial and parallel transmission
Differentiate Between Serial And Parallel Transmission Of Data?
Specific Application of Serial and Parallel communication
Serial versus Parallel Transmission:
Data are transmitted along a communications medium either in serial or in parallel. Most microcomputer owners know that their machines are equipped with serial and parallel ports. These enable the computer to transmit both serial and parallel digital signals.
In both serial and parallel transmission, the bytes corresponding to each message are sent along a medium, one after another. Thus, for the one-word message
SIMON
The byte representation of the "S" is sent first, then "I" then "M," and so on. Serial and parallel transmission differs in that, in serial transmission, the bits of each byte are sent along a single path one after another. In parallel transmission, separate, parallel paths correspond to each bit of a byte so that all the bits arrive at the destination simultaneously.
Because parallel transmission can get messages to its destinations sooner, it is faster then serial transmission. But, because more wiring is needed to set up the extra bit paths, parallel processing is much more expensive. Often, devices that are located within a few feet of each other will communicate in serial. For example, a microcomputer may use parallel transmission to send a word-processing document to a printer that is connected to it.
Data are transmitted along a communications medium either in serial or in parallel. Most microcomputer owners know that their machines are equipped with serial and parallel ports. These enable the computer to transmit both serial and parallel digital signals.
In both serial and parallel transmission, the bytes corresponding to each message are sent along a medium, one after another. Thus, for the one-word message
SIMON
The byte representation of the "S" is sent first, then "I" then "M," and so on. Serial and parallel transmission differs in that, in serial transmission, the bits of each byte are sent along a single path one after another. In parallel transmission, separate, parallel paths correspond to each bit of a byte so that all the bits arrive at the destination simultaneously.
Because parallel transmission can get messages to its destinations sooner, it is faster then serial transmission. But, because more wiring is needed to set up the extra bit paths, parallel processing is much more expensive. Often, devices that are located within a few feet of each other will communicate in serial. For example, a microcomputer may use parallel transmission to send a word-processing document to a printer that is connected to it.
A parallel port transfers several streams of data at once and a serial port transfer a single stream of data. Serial can transmit less data on each clock tick. Serial links can be clocked considerably faster than parallel links. It also achieves higher data rate.