Wednesday, April 8, 2009

2.1.1.2 : Meaning of Input, Process, Output & Storage

Input:
Input is any data or instructions that we enter into the computer system for processing. There are four types of input: which are text, graphic, audio & video. Example of input devices are keyboard, light pen, joystick, microphone, mouse, video & digital camera.
Process:
The processing unit controls all activities within the system. The CPU is an example of a processor. It has the same important as the brain to human being.
Storage:
Storage is a location which data, instruction and information are held for future use. It is the physical material that keeps keeps data, instruction and information. There are two types of storage. They are the primary storage and secondary storage. The example of storage devices are hardisk, Floppy Disk, diskette, RAM, CD ROM and DVD ROM.
Output:
Output is data that has been processed into a useful form, called information. There are four types of output, which are texts, graphics, audio and video. Example of output devices are monitor, printer, speaker and plotter.

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