තොරතුරු හා සන්නිවේදන තාක්ෂණය, නිර්මිකා දසනායක

Data Communication ·          Transmitting data and information is called data communication. ·          Data transmission can be carried out between two or more computers or devices such as printers. ·          Data transmission needs a connection between a sender and a receiver. ·          Creating such a connection is called networking. Basic components required for data communication The following are the basic components that are needed for data communication. •     Sender / Source – the person or the object which sends data •     Medium – medium used to transmit data (telephone wires / wireless) •             Receiver/ destination – the person or the object which receives data Data Transmission Modes There are several modes of data transmission between sender and receiver. 1     Simplex Mode ·          Data is transmitted from the sender to the receiver only. ·          Getting print outs, examples :       watching television listening to