News tagged with computer

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PowerHammer is wake-up call to data-stealing through power lines

Can security sleuths ever complain there's nothing left to do? The answer is obvious, and one more path to mischief has been recognized in the form of power supplies serving as a data exfiltration tool. It appears that malware ...

Security

Apr 18, 2018
54
4

IBM talks about world's smallest computer smaller than grain of salt

World's best. World's fastest. World's smartest. Superlatives are the stuff of which news headlines are made. IBM, taking center stage at its Think 2018 conference in Las Vegas, scores big in superlatives this week in unveiling ...

Hardware

Mar 21, 2018
71
0

How to build a computer with free will

Do you have free will? Can you make your own decisions? Or are you more like an automaton, just moving as required by your constituent parts? Probably, like most people, you feel you have something called free will. Your ...

Computer Sciences

Mar 14, 2018
18
0

A game changer: Metagenomic clustering powered by supercomputers

Did you know that the tools used for analyzing relationships between social network users or ranking web pages can also be extremely valuable for making sense of big science data? On a social network like Facebook, each user ...

Computer Sciences

Mar 12, 2018
525
0

Researchers find algorithm for large-scale brain simulations

An international group of researchers has made a decisive step towards creating the technology to achieve simulations of brain-scale networks on future supercomputers of the exascale class. The breakthrough, published in ...

Computer Sciences

Mar 05, 2018
669
0

Researchers want to teach computers to learn like humans

A new study by Paul Rad, assistant director of the UTSA Open Cloud Institute, and Nicole Beebe, Melvin Lachman Distinguished Professor in Entrepreneurship and director of the UTSA Cyber Center for Security and Analytics, ...

Computer Sciences

Mar 05, 2018
176
0

Are air gaps entirely impermeable? Then you don't know Ben-Gurion team's research

We read many stories about security sleuths who discover how thieves and mischief-makers break into accounts and networks to plant bad stuff and steal personal data.

Security

Feb 11, 2018
48
3

Apple, Android and PC chip problem – why your smartphone and laptop are so at risk

Less than a week into 2018 and we may have already seen the year's biggest technology story. Researchers have identified a security flaw in the computer processors made by three of the world's biggest chip designers, Intel, ...

Security

Jan 05, 2018
5
0

Is your computer secretly mining Bitcoin alternatives? A guide to 'cryptojacking'

Nothing comes for free, especially online. Websites and apps that don't charge you for their services are often collecting your data or bombarding you with advertising. Now some sites have found a new way to make money from ...

Internet

Dec 19, 2017
9
0

Microsoft launches preview of its Quantum Development Kit

(Tech Xplore)—Microsoft has officially released a free preview of its Quantum Development Kit (QDK)—a collection of tools that will allow users to create, compile and run programs written in the Q# (pronounced Q sharp, ...

Hi Tech & Innovation

Dec 13, 2017
1181
0

Researchers are exploring on the p-bit trail

(Tech Xplore)—Welcome to the heady world of finding new ways of computing.

Semiconductors

Dec 13, 2017
5
0

New technology makes artificial intelligence more private and portable

Technology developed at the University of Waterloo is paving the way for artificial intelligence (AI) to break free of the internet and cloud computing.

Computer Sciences

Nov 14, 2017
35
1

Old phones get new life in high-powered computer servers

While most consumers don't pay much attention to the fate of dead smartphones, Princeton University researchers are envisioning a way to breathe new life into them. Instead of tossing old phones in a junk drawer or burying ...

Computer Sciences

Oct 25, 2017
2
0

Computer scientist demonstrates 30-year-old theorem still best to reduce data and speed up algorithms

When we think about digital information, we often think about size. A daily email newsletter, for example, may be 75 to 100 kilobytes in size. But data also has dimensions, based on the numbers of variables in a piece of ...

Computer Sciences

Oct 19, 2017
1120
0

New techniques boost performance of non-volatile memory systems

Computer engineering researchers at North Carolina State University have developed new software and hardware designs that should limit programming errors and improve system performance in devices that use non-volatile memory ...

Computer Sciences

Oct 17, 2017
203
0

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Computer

A computer is a machine that manipulates data according to a set of instructions.

Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs). Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.

The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a mobile phone to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.

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