computer

computer
noun

a device which is capable of receiving information （data） in a particular form and of performing a sequence of operations in accordance with a predetermined but variable set of procedural instructions (program) to produce a result in the form of information or signals. Most computers operate electronically and manipulate data in digital form
（电子）计算机，电脑
■a person who makes calculations, especially with a calculating machine
（尤指用计算器）计算者
The power of the digital computer lies in its ability to carry out different tasks according to its programming, without any structural change. Successive generations of computer have become progressively smaller and faster as vacuum tubes have been replaced first by transistors and then by integrated circuits. Originally huge and expensive tools of scientific research, they now include hand-held machines for personal use, and are widely used for the storage, processing, transfer, and presentation of information, and for the control of mechanical and electronic systems

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