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It Notes for Business

In: Computers and Technology

Submitted By itayi
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ADVANCED COMPUTER

APPLICATIONS

MODULE

DEFINE A COMPUTER

* An electronic machine that works under the control of stored programs to accept, process & output data/information for use by the operator. * A device that accepts data, processes the data in accordance with a stored program, generates results, and usually consists of input, output, storage, and arithmetic, logic, and control units. * A functional unit that can perform substantial computation, including numerous arithmetic operations or logic operations, without human intervention during a run. * It is an electronic device/machine that accepts data (raw facts & figures) as input and processes (works on it) to produce information (data converted to meaningful form) as output.

The computer is made up of hardware, software and peripheral devices.

Hardware- refers to the tangible, physical and mechanical components of a computer.

Software- refers to the intangible computer components, which are the programs or instructions of the computer. Everything that a computer does, it acts under instructions written out as computer programs. The hardware needs these instructions to function

Computer program: * A set of instructions, written in a specific programming language, which a computer follows in processing data, performing an operation, or solving a logical problem. See also software. * A computer program is a set of statements or instructions to be used directly or indirectly in a computer in order to bring about a certain result.
NB: Software alone is useless, so is the hardware. The two are inseparable.

Peripheral Devices- These are devices that are external (not part of the computer) but can be connected to a computer. They are not essential for the functioning of the computer but can be connected to the computer for specific reasons. Examples are scanners, modems,...

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