One communication device is the common telephone modem (from modulator/demodulator). Modems modulate, or transform, a computer’s digital message into an analog signal for transmission over …

Jan 19, 2026 · Communication, the exchange of meanings between individuals through a common system of symbols. This article treats the functions, types, and psychology of communication.

Jan 2, 2026 · But ordinary voice communications taking place by way of a telephone are not in binary form; neither is much of the information gathered for transmission from a space probe, nor are the …

Jan 23, 2026 · It has become the most widely used telecommunications device in the world, and billions of telephones are in use. This article describes the modern telephone’s components and traces its …

Telecommunications media, equipment and systems—metal wire, terrestrial and satellite radio, and optical fibre—employed in the transmission of electromagnetic signals, facilitating mass …

Modems thus make it possible for established telecommunications media to support a wide variety of data communication, such as e-mail between personal computers, facsimile transmission between …

Bluetooth, developed in the late 1990s, is a technology designed to enable short-range wireless communication between electronic devices, such as between a laptop and a smartphone or between …

Jan 28, 2026 · Some devices, such as video display terminals and USB hubs, may provide both input and output. Other examples are devices that enable the transmission and reception of data between …

Jan 14, 2026 · Wi-Fi-enabled devices are able to connect to the Internet when they are near areas that have Wi-Fi access, called “hotspots.” Hotspots have become common, with many public places such …

Dec 24, 2025 · Satellite communications play a vital role in the global telecommunications system. Approximately 2,000 artificial satellites orbiting Earth relay analog and digital signals carrying voice, …