Communications

Updated: 06/30/2020 by Computer Hope
Computer and web server transferring data.

Communications is the exchange of information between two or more things, such as people, devices, governments, organizations, or businesses. In digital communication, data is exchanged between two or more computing devices. This data communication (datacom) occurs over a communication medium, such as a telephone line, fiber optic cable, or wireless radio signal. The collection of digital devices and their connection media is a computer network and is what allows devices to "talk" to each other.

Examples of digital communications

The following are examples of digital communications:

How is data communication different than telecommunications?

With data communications, only data is transmitted. However, with telecommunications, there is a mix of both data (digital) and voice (analog). For example, when using a dial-up modem to connect to another computer (e.g., BBS) and share data, the modem uses a landline to communicate digital data using an analog signal.

Modem terms, Network terms, Noise, Talk