Engineering

Next generation of greenhouses may be fully solar powered

Many greenhouses could become energy neutral by using see-through solar panels to harvest energy—primarily from the wavelengths of light that plants don't use for photosynthesis. Those are the findings of a new modeling ...

Computer Sciences

AI agrees with mom: Take good care of yourself

Analysis by researchers at the University of Waterloo using artificial intelligence (AI) supports the conventional wisdom that taking care of yourself makes you feel good.

Computer Sciences

Protecting essential connections in a tangled web

It's winter. And as any frequent traveler knows, winter can mean airport weather delays. A blizzard in Minneapolis, a major airport hub, can quickly lead to delays in balmy Miami or foggy London.

Machine learning & AI

Neuroscience opens the black box of artificial intelligence

Computer scientists at Otto von Guericke University Magdeburg are aiming to use the findings and established methods of brain research to better understand the way in which artificial intelligence works.

Internet

Cloud computing: invisible, versatile and highly profitable

With each passing quarter, Amazon, Microsoft and Google have been setting new records, while cloud computing has become the invisible backbone supporting much of our daily lives. Its potential to become an even bigger part ...

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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