Introduction To Computer

What is Computer ?
A computer is an electronic device, operating under the control of instructions (software) stored in its own memory unit, that can accept data (input), manipulate data (process), and produce information (output) from the processing. Generally, the term is used to describe a collection of devices that function together as a system.

What Computer Can Do ?
Computers can perform four general operations, which comprise the information processing cycle.

• Input
• Process
• Output
• Storage

Data and Information

• All computer processing requires data, which is a collection of raw facts, figures and symbols, such as numbers, words, images, video and sound, given to the computer during the input phase.
• Computers manipulate data to create information. Information is data that is organized, meaningful, and useful.
• During the output Phase, the information that has been created is put into some form, such as a printed report.
• The information can also be put in computer storage for future use.

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