Computer Sciences
Imagine for a moment, that we are on a safari watching a giraffe graze. After looking away for a second, we then see the animal lower its head and sit down. But, we wonder, what happened in the meantime? Computer scientists ...
Mar 8, 2023
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Computer Sciences
Ralph Lydic, professor in the UT Department of Psychology, and Dmitry Bolmatov, a research assistant professor in the UT Department of Physics and Astronomy, are part of a UT/ORNL research team studying how bio-inspired materials ...
Jan 9, 2023
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28
Security
Imagine you're the new manager of a large apartment building and someone has stolen one of your keys—but you're not sure which one. Was it to a first-floor apartment? The mail room? Maybe it's a master key to all the units.
May 22, 2023
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60
Security
Adversaries can deliberately confuse or even "poison" artificial intelligence (AI) systems to make them malfunction—and there's no foolproof defense that their developers can employ. Computer scientists from the National ...
Jan 4, 2024
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Computer Sciences
Computer systems that are physically isolated from the outside world (air-gapped) can still be attacked. This is demonstrated by IT security experts of the Karlsruhe Institute of Technology (KIT) in the LaserShark project. ...
Dec 21, 2021
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Consumer & Gadgets
Sometimes it seems like an AI is helping, but the benefit is actually a placebo effect—people performing better simply because they expect to be doing so—according to new research from Aalto University. The study also ...
May 13, 2024
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Engineering
As we move into a world where human-machine interactions are becoming more prominent, pressure sensors that are able to analyze and simulate human touch are likely to grow in demand.
Jun 1, 2023
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120
Security
Government computer systems in Hall County, Georgia, including a voter signature database, were hit by a ransomware attack earlier this fall in the first known ransomware attack on election infrastructure during the 2020 ...
Oct 30, 2020
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5
Security
A ransomware attack locked down a US jail, knocking out security cameras and leaving inmates confined to their cells, court documents show.
Jan 12, 2022
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9
Security
A cyberattack on the Office of Colorado State Public Defender has forced the office to shut down its computer network, locking public defenders across the state out of critical work systems.
Feb 13, 2024
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1
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
