Can Anyone Explain Different Data Transmission Modes?


2 Answers

Amen Bukhari Profile
Amen Bukhari answered
For transferring data from one place two another three modes are used. These modes are simplex mode, half duplex mode and full duplex mode. Simplex mode is used for remote device which receive bit does not send. Simple mode is not widely used because it is not possible to confirm successful transmission of data. In simplex mode data is either sent or received, there is no confirmation of data transmission.

Half duplex mode can be transmitted in both directions but only in one direction at a time. In half duplex mode data can be received and sent alternatively. For confirmation of successful data transmission return path is provided. In duplex mode two way transmissions is possible but it cannot take place concurrently. Data transmission rate slows down because each time for sending or receiving data direction is reversed.
Full duplex mode is used to transmit data in both directions simultaneously. It is faster mode for data transmission. In the half duplex, the circuit of the terminal changes its direction each time for sending and receiving data. This is a time consuming mode. But full duplex mode the terminal circuits do not have to change directions alternatively.
Shumaela Rana Profile
Shumaela Rana answered
In the 'simplex mode', the communication between the sender and the receiver is always unidirectional. It's just like on a one way street. Only one of the two devices on a link can transmit while the other can only receive. The keyboards and the traditional monitors are both the examples of the simplex devices. The keyboard can only introduce an input while the monitor can only accept the output.

The other communication mode is the 'half duplex' mode in which each station can both transmit and receive, but not at the same time. When device is in sending mode the other can only be in receiving mode and vice versa. The half duplex mode is just like a one- lane road with two-directional traffic. While the cars are travelling in one direction, the cars going the other way must have to wait. In a half duplex transmission, the entire capacity of the channel is taken over by whichever of the two devices in transmitting at the time. The walkie-talkies and the citizen band radios are both the half duplex systems. In 'full duplex' mode which is sometimes also known as the duplex, both stations can transmit and receive data simultaneously.

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