The process of transmission of information from one location to another location is called data communication. Certain hardware,software and procedures are used in Data Communication. Communication, the transfer of information, is the basis offfice automation. Electronic communication consists of telecommunication and data communication. Telecommunication is the use of telephone, telegraph, radio, television facilities to transmit information. Data communication is the transfer of data or information between computer devices.
Data Communication
Office automation integrates the two examples for data communication:
- Airline reservation
- Automated banking
- Point of sale terminal
In all the cases, the data base is located at a central place and the data communication process is done from various terminals. A system, modem, a communication network and the remote computers hardware and software should work in tandem for a successful exchange of data.
Data Communication :
It is the process of transporting data from one point to another. Networks are communication system designed to convey information from one point of origin to a point of destination. It is a communication system not computers system. Network can be a local area network or a long haul network (ex: Telephone Network) communication system will be successful when the message is in understandable form.
Data Communication System :
Five Basic Components :
1. Sending or Originating computer, where the terminal has to transmit the data. The data can be a file on a disk or may be entered on a keyboard.
2. Sending Computer should have communication device that convert the data into the form that can be transmitted.
3. Communication link to carry the data from place to place ex : Telephone Lines
4. A device should be attached at the recievers computer to convert the data into the form that the recieving computer can understand.
5. The recieving computer should convert the data and display them or print them or store them in a file.