February 5, 2018

January 29, 2018

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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







Hard Drives:


Optical Drives:



Solid State Drives


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









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