Modes of Data Communication
Simplex transmission is a mode of data communication where information flows in only one direction, from the sender to the receiver. In this mode, the sender can transmit data, but the receiver cannot send any data back to the sender. It is similar to a one-way street where traffic flows in only one direction.
Example: Television or radio broadcasting is an example of simplex transmission. The TV or radio station broadcasts programs, and viewers or listeners can receive and consume the content, but they cannot send any feedback or interact with the station.
Half Duplex Transmission:
Half duplex transmission allows data to be transmitted in both directions, but only one direction at a time. The sender and receiver can take turns transmitting and receiving data. When one party is sending data, the other party must wait until the transmission is complete before replying.
Example: Walkie-talkies or two-way radios operate in half duplex mode. One person can speak into the walkie-talkie while holding down a button, and the other person can listen. Once the sender releases the button, the receiver can press the button and respond.
Full Duplex Transmission:
Full duplex transmission enables simultaneous two-way communication, allowing data to be transmitted in both directions simultaneously. In this mode, the sender and receiver can transmit and receive data at the same time, like a two-way street where traffic flows in both directions.
Example: Telephone conversations over landline or mobile networks are examples of full duplex transmission. Both parties can speak and listen to each other at the same time, allowing for real-time interactive communication.
It’s important to note that these modes of data communication can be achieved using various transmission technologies, including wired (e.g., Ethernet) and wireless (e.g., Wi-Fi, cellular networks) technologies. The specific mode used depends on the requirements of the communication system and the capabilities of the transmission medium.