Computer Crash Course

8/12/2019 Computer Crash Course

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WHAT IS A COMPUTER ?

It is an electronic device capable ofmanipulating data to generate usefulinformation.

DATARaw informationfacts or informationused usually tocalculate, analyze, orplan something


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CAPABILITIES OF COMPUTER

It is self -directing this means that the user provides allthe instructions to the computer at the start and then laterproceeds without any human intervention.


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Saves and retrieved information it can storevoluminous data and gives out the same data whenneeded.

SAVE

RETRIEVE


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1956 5MB HARD DRIVE


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Computes complex formulas and generate accurate data it can process calculations at high speed and producefast and precise output.


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It performs logical operations it is an efficient tool inanalyzing and solving problems that involve decisions.


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Communicates with the users and other machine it candisplay error messages on the screen about the usersinstructions or data thereby avoiding incorrect output orresults.


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It is self-directingSaves and retrieved information

Computes complex formulas and generate accurate dataIt performs logical operationsCommunicates with the users and other machine


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LIMITATIONS OF COMPUTER

It cannot correct erroneous input data if mistakenlygiven incorrect data or instruction, it does not have theability to correct.

A computer fed with wrong data will produce wronginformation or in computer term, GIGO (Garbage In,Garbage Out)..


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It can only do what it is instructed or programmed to do the computer executes and follows only the set ofinstructions that has been given/entered by the user.


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It cannot generate information without any correct data orset of instructions entered by the user.


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It is subject to occasional breakdown like any othermachines, a computer malfunction due to worn outcomponents such as cards, storage devices and others.


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It cannot correct erroneous input dataIt can only do what it is instructed or programmed to doIt cannot generate information without any correct data or

set of instructions entered by the user.It is subject to occasional breakdown


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PARTS OF COMPUTER

INPUT DEVICESCPU

OUTPUT DEVICESSTORAGE DEVICES


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INPUT DEVICES

Used to enter data into computer


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CPU

Central Processing UnitBrain of the computer It process informationthrough computer.


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STORAGE DEVICES

Keep data temporarily or permanent.


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OUTPUT DEVICES

Uses to translate the computer processing intohuman readable form.


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MACHINE LANGUAGE

Computers are Digital. This means that the chip or"Brain" inside the computer only understands twostates. On and Off. Just like a light switch. You canonly flip a switch on and off. The code is basically aseries of 0's and 1's. These represent on and off. 1is on and 0 is off.


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INPUT PROCESSING OUTPUT

he

llo

0110100001100101

011011000110110001101111

he

llo


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Computer Crash Course

Documents

Transcript of Computer Crash Course