Question

A computer is a machine (mostly electronic) that is able to accept data as input, process that data using predefined algorithms and data structures, and perform tasks as output - including the transformation of raw data into information, then knowledge, and finally insight about the data's domain. Output also takes the form of the performance of physical tasks, as well as data storage, data transformation, and data retrieval. Computers can also form networks with other computers for the purposes of data interchange and leveraging a distributed programming model for parallel processing.

The primary use of computers is to solve human problems - including mathematical problems, scientific problems, healthcare problems, business problems, economics problems, social problems, the human need to create and distribute art and computational artifacts, and to provide a means of communication between humans, between computerized devices, and directly between humans and computers.

Calculating machines are old in the history of technology. Early examples are the astrolabe and the abacus. Today a computer is a programmable machine. The two principal characteristics of a computer are: It responds to a specific instruction set in a well-defined manner and it can execute a prerecorded list of instructions (a program). There are four main processing steps in a computer: inputting, storage, outputting and processing.

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Answer 1

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Answer 2

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