A computer is a device that can be configured to take in data (input), turn it into information that is useful (output), and then store the information away (in a secondary storage device) for safekeeping or future use.
What is computer ?
- "Radio, movies, and television mixed," a six-year-old said of a computer. The phrase "a television set you can talk to" was used by a ten-year-old to describe a computer.
- The ten-year-definition old's is more accurate, but he or she still does not see the computer as a tool with the ability to alter things.
- Although hardware does the processing, software controls how input is converted to output.
- A computer system needs input, processing, output, and storage in order to operate. These are the four main data handling components. Following is a description of how the hardware in charge of these four regions works:
- Data is accepted via input devices in a format that a computer can understand, and after being sent there, it is processed.
- The electronic circuitry that transforms input data into the information humans seek is found in the processor, also referred to more technically as the central processing unit (CPU). Computer instructions contained in the program are carried out by the central processing unit.
- The processed data-information is presented to users in a usable way through output devices.
- Typically, storage refers to backup storage. Diskettes and other items that can store data and applications outside of the computer are examples of secondary storage. The computer's memory, which will be seen to be only briefly able to store data and programs, is supplemented by these devices.
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