Security

Your old mobile phone number could compromise your cybersecurity

The Department of Computer Science and Center for Information Technology Policy at Princeton University has conducted a study and released a paper assessing the security and privacy risks of phone number recycling by mobile ...

Telecom

What can hackers do with your mobile number?

Boris Johnson's personal phone number has been publicly available on the internet for 15 years, it has been revealed. Listed at the bottom of a 2006 press release, the number has reportedly been accessible online from the ...

Internet

The big Pentagon internet mystery now partially solved

A very strange thing happened on the internet the day President Joe Biden was sworn in. A shadowy company residing at a shared workspace above a Florida bank announced to the world's computer networks that it was now managing ...

Consumer & Gadgets

Why the semiconductor chip shortage could be a good thing

A shortage of the semiconductor chips that serve as the brainpower in millions of electronic devices has stalled the production of everything from cars to cell phones and sent companies racing to buy up as many of the chips ...

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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