Security
A cyberattack brought down the computer systems of the Los Angeles Unified School District over the weekend, but officials said late Monday night that schools would open as scheduled Tuesday morning.
Sep 6, 2022
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Security
A ransomware attack targeting the huge Los Angeles school district prompted an unprecedented shutdown of its computer systems as schools increasingly find themselves vulnerable to cyber breaches at the start of a new year.
Sep 6, 2022
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Software
While virtual reality has been around for decades, a combination of higher-resolution graphics, smoother tracking of the user's movements and cheaper, sleeker headsets has propelled the immersive technology into arenas beyond ...
Aug 16, 2022
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Computer Sciences
Delivering sustainability in traffic is no easy feat. Could software that globally coordinates cars to avoid traffic jams and congestion be the answer?
Aug 2, 2022
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Computer Sciences
In modern cryptosystems, users generate public and private keys that guarantee security based on computational complexity and use them to encrypt and decrypt information. Recently however, modern public-key cryptosystems ...
Jul 22, 2022
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154
Computer Sciences
Deep learning techniques have recently proved to be highly promising for detecting cybersecurity attacks and determining their nature. Concurrently, many cybercriminals have been devising new attacks aimed at interfering ...
Computer Sciences
The U.S. Department of Commerce's National Institute of Standards and Technology (NIST) has chosen the first group of encryption tools that are designed to withstand the assault of a future quantum computer, which could potentially ...
Jul 5, 2022
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58
Security
Denial of service (DOS) and distributed denial of service (DDOS) attacks on computer systems are a major concern to those charged with keeping online services running and protecting systems and those who use them. Such intrusions ...
Jul 1, 2022
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Computer Sciences
A camera system developed by Carnegie Mellon University researchers can see sound vibrations with such precision and detail that it can reconstruct the music of a single instrument in a band or orchestra.
Jun 21, 2022
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693
Computer Sciences
In a project aimed at developing intelligent tools to fight child exploitation, University of Groningen computer scientists have developed a system to analyze the noise produced by individual cameras. This information can ...
Jun 21, 2022
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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
