Computer Sciences

A framework to evaluate techniques for simulating physical systems

The simulation of physical systems using computing tools can have numerous valuable applications, both in research and real-world settings. Most existing tools for simulating physical systems are based on physics theory and ...

Security

'Holy moly!': Inside Texas' fight against a ransomware hack

It was the start of a steamy Friday two Augusts ago when Jason Whisler settled in for a working breakfast at the Coffee Ranch restaurant in the Texas Panhandle city of Borger. The most pressing agenda item for city officials ...

Software

Microsoft's Windows 11 will allow for Android apps

Microsoft on Thursday unveiled a new version of the Windows software powering most of the world's computers, opening the door to apps tailored for Google-backed Android operating system.

Computer Sciences

Researchers design new techniques to bolster memory safety

Because corporations and governments rely on computers and the internet to run everything from the electric grid, healthcare, and water systems, computer security is extremely important to all of us. It is increasingly being ...

Security

US recovers over half of ransom paid to pipeline hackers

The US Justice Department announced Monday that it had recovered more than half of the $4.4 million paid by Colonial Pipeline to Russia-based ransomware extortionists Darkside, who had forced the shutdown of a major fuel ...

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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