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Data Communication (Basic Knowledge-- Semi-Illustrated)

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Submitted By NagatoUzumaki
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Data Communication Presentation

Data communication is the transmission of data from one location to another for direct use or further processing.

Wireless communication offer organizations and users many benefits, such as portability, flexibility, increased productivity and lower instillation cost.
Wireless technologies, in the simplest sense, enable one or more devices to communication with each other without physical connections without cabling.

Half Duplex

Duplex
Simplex
Asynchronous
Synchronous



A half duplex line that can send and receive data but not simultaneously.



A full duplex line can send and receive data simultaneously. 

A simplex line permits data to flow n only one direction. You can send data or receive it or both.



Asynchronous communication is the transmission of data without the use of an external clock signal, where data can be transmitted intermittently rather than in a steady stream.



the sender and receiver must synchronize with one another before data is sent. To maintain clock synchronization over long periods, a special bit-transition pattern is embedded in the digital signal that assists in maintaining the timing between sender and receiver.

What is a Network?



A network is a group of two or more computers linked together so that they can share resources such as hardware, software and data and can communicate with each other.

1.
2.
3.
4.
5.

Local area networks (LANs)
Wide area networks (WANs)
The Internet
Intranets
Extranets

A LAN consists of a collection of microcomputers, such as in an office building, department or school that can share peripherals, files and programs and communicate with each other on the network.
LAN’s ability to share information and communicate with other devices and computers on the network

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