Security
With nearly 84% of the world's population now owning a smartphone, and our dependence on them growing all the time, these devices have become an attractive avenue for scammers.
Apr 28, 2022
2
298
Electronics & Semiconductors
Computer scientists at the University of California San Diego are showing how soil microbes can be harnessed to fuel low-power sensors. This opens new possibilities for microbial fuel cells (MFCs), which can power soil hydration ...
Mar 30, 2022
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258
Energy & Green Tech
For decades researchers and technologists have regarded batteries and capacitors as two distinct energy storage devices—batteries, known for storing more energy but releasing it slowly; capacitors, for quickly discharging ...
Mar 18, 2022
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618
Consumer & Gadgets
Privacy measures that are meant to preserve the anonymity of smartphone users are no longer suitable for the digital age, a study suggested on Tuesday.
Jan 25, 2022
0
281
Electronics & Semiconductors
A pioneering type of patented computer memory known as ULTRARAM has been demonstrated on silicon wafers in what is a major step towards its large-scale manufacture.
Jan 7, 2022
0
110
Electronics & Semiconductors
Research has long strived to develop computers to work as energy efficiently as our brains. A study, led by researchers at the University of Gothenburg, has succeeded for the first time in combining a memory function with ...
Nov 29, 2021
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256
Consumer & Gadgets
An in-depth analysis of a range of popular Android mobile phones has revealed significant data collection and sharing, including with third parties, with no opt-out available to users.
Oct 11, 2021
1
473
Security
Georgia Tech Researchers have now shown that one of the very measures meant to keep data secure on a low-end phone can enable attackers to steal it.
Sep 28, 2021
0
226
Hi Tech & Innovation
Equipped with a color 3D camera, an inertial measurement sensor, and its own on-board computer, a newly improved robotic cane could offer blind and visually impaired users a new way to navigate indoors. When paired with a ...
Sep 8, 2021
0
189
Consumer & Gadgets
A team at LG Chem has announced on LG's News Room webpage that the company has developed a new kind of foldable screen display technology for use in mobile devices. As part of the announcement, officials at LG claim that ...
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
