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A computer is a machine for manipulating data according to a list of instructions known as a program.

Computers are extremely versatile. In fact, they are universal information-processing machines. According to the Church–Turing thesis, a computer with a certain minimum threshold capability is in principle capable of performing the tasks of any other computer, from those of a personal digital assistant to a supercomputer, as long as time and memory capacity are not considerations. Therefore, the same computer designs may be adapted for tasks ranging from processing company payrolls to controlling unmanned spaceflights. Due to technological advancement, modern electronic computers are exponentially more capable than those of preceding generations (a phenomenon partially described by Moore's Law).

Computers take numerous physical forms. Early electronic computers were the size of a large room, and such enormous computing facilities still exist for specialized scientific computation — supercomputers — and for the transaction processing requirements of large companies, generally called mainframes. Smaller computers for individual use, called personal computers, and their portable equivalent, the laptop computer, are ubiquitous information-processing and communication tools and are perhaps what most non-experts think of as "a computer". However, the most common form of computer in use today is the embedded computer, small computers used to control another device. Embedded computers control machines from fighter aircraft to digital cameras.

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Nvidia Tegra 2: Double the Computational and Graphics Power http://short.to/w4bz
ryan_morland (Ryan Morland) Fri, 06 Nov 2009 12:32:36 -0000
Nvidia Tegra 2: Double the Computational and Graphics Power http://short.to/w4bz
[分享]Computational Physics Group #英国中央兰开夏大学计算软物质物理 [IPv6'ed by http://zuosa.net/psi2.u] http://zuosa.net/psi9.u
ljqu (lijian) Fri, 06 Nov 2009 12:00:40 -0000
[分享]Computational Physics Group #英国中央兰开夏大学计算软物质物理 [IPv6'ed by http://zuosa.net/psi2.u] http://zuosa.net/psi9.u
Computational Genomic Signatures - by Khalid Sayood - Morgan & Claypool Publishers. http://tinyurl.com/yh47akp
science_book (New Science Books) Fri, 06 Nov 2009 10:51:36 -0000
Computational Genomic Signatures - by Khalid Sayood - Morgan & Claypool Publishers. http://tinyurl.com/yh47akp
Just been talking to Mr Babbage about his so-called Computational Engine, the man is a fool! It will never catch on! #HowVictorianIsThat
andrewish (Andrew Isherwood) Fri, 06 Nov 2009 09:22:34 -0000
Just been talking to Mr Babbage about his so-called Computational Engine, the man is a fool! It will never catch on! #HowVictorianIsThat
Researching for computational algorithms.
shellaurfano (shella urfano) Fri, 06 Nov 2009 08:30:10 -0000
Researching for computational algorithms.
Postdoc: Post-doctoral position in Computational Genetics in http://tinyurl.com/ylyl6ao
evoldir (EvolDir) Fri, 06 Nov 2009 07:31:03 -0000
Postdoc: Post-doctoral position in Computational Genetics in http://tinyurl.com/ylyl6ao

 
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