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Note for Data Communications - DC By Khyber Khan

  • Data Communications - DC
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Instructor Khyber Khan Humdard Khurasan University, Jalalabad Khyberkhanit@gmail.com 1

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        Data communication Components of data communication Effectiveness of Data Communication Data transmission mode Key Data Communication Terminology Speed Communication: Types of data transmission Topologies Khyberkhanit@gmail.com 2

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 The transmission of data from one node to another node is called data communication. OR  Data communications are the exchange of data between two devices via some form of transmission medium such as a wire or warless. OR  For data communication to occur, the communication devices must be part of communication system made up of combination of hardware and software. Khyberkhanit@gmail.com 3

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Explanation: ➢ ➢ When we communicate, we are sharing information. This sharing can be local or remote. Local communication usually occurs face to face, while remote communication takes place over distance. The term Telecommunication, which includes Telephony, Telegraphy, and television, means communication at a distance. The data refers to facts, concepts and instruction presented in whatever form is agreed upon by the parties creating and using the data. In the context of computer information system, data represented by binary information units produced and consumed in the form of 0s and 1s. Khyberkhanit@gmail.com 4

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