Computer Systems
- Created by: Ashleigh Hockenhull
- Created on: 27-04-15 18:57
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- Computer Systems
- a system that is able to take a set of inputs, process them & create a set of outputs
- done by a combination of hardware & software
- role of an input is to provide data for further processing
- consists of data or commands that are entered into the computer system by an input device
- input
- role of an input is to provide data for further processing
- consists of data or commands that are entered into the computer system by an input device
- examples of an input device are; keyboard, mouse, touchscreen, microphone
- role of an input is to provide data for further processing
- computer processing
- central part of a computer system is processing
- processing is the stage where input data is manipulated in order to produce meaningful information
- computer output
- stage where the information is presented in a hard copy
- hardware
- any part of the computer u can physically touch, pick up, move, hold etc.
- physical parts that make up the computer
- external hardware examples: monitor, printer, keyboard, mouse, microphone
- internal hardware
- examples: hard disk, CPU, motherboard
- Software
- applications & programming instructions that tell ur computer what to do
- two main types of software
- systems software - basically controls the way the computer works and tells it what to do
- application software
- type of software u use to do work & have fun
- computers come in many forms & often embedded in other devices e.g. mobiles
- program is set of instructions that the computer carries out to process data
- both programs & data can be stored & retrieved by he computer system
- a computer system can change task by loading a different program
- a system that is able to take a set of inputs, process them & create a set of outputs
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