Explain components in data communication environment?


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Matthew Porter answered
According to the Divine Konection website, there are five main components of a data communication system. These are:
•    Transmitter (e.g. Computer or radio station)
•    Receiver (e.g. Telephone handset or workstation)
•    Medium (e.g.. Radio waves or coaxial cable)
•    Message (e.g. Video or text)
•    Protocol (e.g. TCP/IP or AppleTalk)

The transmitter will send the message and the receiver will receive this message. The medium is the channel over which the message is sent. The protocol is the set of rules that will guide how the data is transmitted from encoding to decoding. The message is central to the other components - it is the data that is being communicated itself.

Data communication refers to the transmission of digital messages to devices external to the message source. When we are dealing with computers, we are typically talking about equipment that is designed to provide or to gather information that needs to communicate beyond itself - to a similar system or a completely different type of system. Data communication provides the equipment, tools and products to make this type of communication happen.
An example of such data communication could be between two personal computers in the same building. By connecting the two computers with a cable, the possibility for data communication to take place now exists. The process of a computer making contact with the internet through a modem is another example of data communication.

More thorough details of data communication can be viewed by visiting:
•    www.pulsewan.com/whatis_datacomm.htm •    www.divinekonection.info/articles/The-Five-Main-Components-o

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