Security

Research describes new protocol for stopping network interlopers

Dr. Santosh Ganji, a recent computer engineering doctoral graduate, and Dr. P.R. Kumar, a professor in the Department of Electrical and Computer Engineering at Texas A&M University College of Engineering, work on the security ...

Machine learning & AI

Ten ways artificial intelligence will shape the next five years

Over the past year, artificial intelligence has made a significant impact on the world. While most of us have noticed the advancements in text and image tools like ChatGPT and Midjourney, a deeper revolution is happening ...

Consumer & Gadgets

iPhone survives 16,000-foot fall from Alaska Airlines flight

Now that's what you call airplane modeā€”an iPhone that plummeted 16,000 feet (5,000 meters) from an Alaska Airlines flight landed without a single crack in the screen and even a battery still half-charged.

page 2 from 40

Telephone

The telephone (from the Greek: τῆλε, tēle, "far" and φωνή, phōnē, "voice") is a telecommunications device that transmits and receives sound, most commonly the human voice. It is one of the most common household appliances in the developed world, and has long been considered indispensable to business, industry and government. The word "telephone" has been adapted to many languages and is widely recognized around the world.

The device operates principally by converting sound waves into electrical signals, and electrical signals into sound waves. Such signals when conveyed through telephone networks — and often converted to electronic and/or optical signals — enable nearly every telephone user to communicate with nearly every other worldwide. Graphic symbols used to designate telephone service or phone-related information in print, signage, and other media include ℡, ☎, ☏, and ✆.

This text uses material from Wikipedia, licensed under CC BY-SA