Computer System by RORY

A computer system is something with a :

1012363 — 2014-10-22 09:24:23 UTC

processor Input Output power memory

importance of computer systems:

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computer are important because they are out main means of transport. They provide life saving operations to ill people.

Main way of communication with people outside out country.

Ccomputers must be reliable because:

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if they failed people could die through operation, plane crashes etc.

X% of the worlds money is now online.

Medical records and other important infomtion is stored on computer systems

Computer systems must be made to a suitable standard because

1012363 — 2014-10-22 09:46:51 UTC

If there were no suitable standards computers would brake easily so that organisations make money profits.

(this means that computers must be made to industry standard or they cannot be commercially sold)

example: all computers must have the same of USB port.

CPU

1012363 — 2014-11-06 09:08:11 UTC

central processing unit. The cpu

C) Characteristics that improve CPU

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One factor that effects the efficiency is cache size, this is where the instructions that are used regularly are stored, if this is increased more instructions can be stored there for fast access making the fetch, decode and excite cycle more efficient.

Another factor that improves CPU efficency id the amount of cores by increasing the amount of cores you increase the amount of instructions that can be fetched, decoded and executed at the same time e.g. quad core four times as many instructions at once.