Introduction
Data exchange between a source and a receiver across a transmission medium, such as a wire connection, is referred to as data communication. When communicating devices are located in the same building or another similarly constrained geographic region, data communication is referred to as local.
Source and receiver have extremely straightforward definitions. Source and receiver are terms used to describe the devices that transmit and receive data respectively. Data transmission and maintenance during the process are the goals of data communication, not the creation of information at the source or reception.
Through data transmission circuits, a data communication system may gather data from far sites and subsequently output processed data to distant destinations. The figure gives a more comprehensive picture of data transmission networks. The many data communication techniques currently in use are developed progressively, either to enhance the already-existing data communication techniques or to replace them with better alternatives and features.
Then, while choosing communication systems, there is data communication jargon to be aware of, such as baud rate, modems, routers, LAN, WAN, TCP/IP, and ISDN. It is therefore important to examine and comprehend these terminologies as well as the steady advancement of data communication techniques.
Characteristics of Data Communication
- Delivery
- Accuracy
- Timeliness
- Jitter
Components of Data Communication
- Message
- Sender
- Receiver
- Transmission Medium
- Protocol
Information that has to be communicated from one person to another is known as a message. Any type of file might be used—text, audio, video, etc.
Sender: It is only a piece of hardware that transmits data packets. It might be a laptop, desktop computer, tablet, smartphone, video camera, workstation, etc.
The device that receives messages is referred to as a receiver. It might be a workstation, a mobile phone, a computer, etc.
Transmission medium or communication channels are the means by which two or more workstations are connected. Workstations can connect to one another wirelessly or through wired networks.
A rule set (Protocol): Data should be understood by both the sender and the recipient when it is sent; otherwise, it is useless.