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Computer Systems

February 5, 2018

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Computer Systems

A computer is something that takes INPUT, PROCESSES it and OUTPUTS result. On occasions computers will have STORAGE as well.

 

 

INPUT devices - Devices that allow a user to INPUT data into the system TO BE PROCESSED- Data may be image, video, sound as well as text and motion

 

 

 

OUTPUT devices - Users will receive from THE PROCESSED data through an output device, sound, image, vibration, led all output methods

 

 

 

 

 

PROCESS - CPU and Main Memory are involved in the Process section, data is FETCHED from Main memory, decoded in the CPU - (computed, calculated) The executed ti be output and/or put back into Memory. FETCH - DECODE - EXECUTE Cycle.

 

 

 

How the CPU works, with memory and storage - VON NEUMANN ARCHITECTURE

 

 

 

 

 

 

 

 

 

 

 

 

Memory and Storage

 

Main Memory

 

RAM and ROM

 

 

 

 

Hard Drives:

 

Optical Drives:

 

 

Solid State Drives

 

Difference between Hard Disc Drive (HDD) and Solid State Drive (SSD)

 

 

 

 

 

 

 

 

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