by David

Importance of Computer Systems

1012383 — 2014-10-22 09:30:27 UTC

Computer systems are used in our everyday lives, pretty much everything we use has some form of computer system built in.

we rely on them to help us perform a variety of tasks.

The need for reliability

1012383 — 2014-10-22 09:32:33 UTC

we need computer systems to be reliable because if they aren't then the many people relying on machines to keep them breathing will likely die.

The need for professional standards

1012383 — 2014-10-23 11:36:03 UTC

without regular maintenance computers will fall into disrepair.

so to keep them in good condition a professional will have to make sure all the parts are functioning correctly.

any parts that do malfunction will need to be replaced quite often at great cost to the user.

Concerns with computer systems

1012383 — 2014-11-06 09:13:55 UTC

a series of laws has been put in place in order to protect users, firewalls stop their data from being accessed, any parts that can be recycled are recycled. these protect the users and the envrionment

the purpose of CPU

1012383 — 2014-11-07 11:04:32 UTC

CPU is the central processing unit, it controls all the instructions sent in by the user and prioritises which task to do first

Fetch/ decode/execute

1012383 — 2014-11-07 11:06:45 UTC

a CPU performs three different operation while getting instructions. the first is to fetch the instruction, then it is decoded into the computers language, then it executes the given instruction

performance

1012383 — 2014-11-07 11:08:44 UTC

by increasing the cache, you increase the amount of memory that is closest to the CPU, adding more cores increases the amount of instructions that can be exectuted at any one time