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general theory notes

Hardware: Is a part of a computer (it is a group of machines.)
Hardware is made up of : (a)The CPU and main memory (b)Input devices (c)Output devices (d)Storage devices
Main memory: Stores programmes and data for processing.
CPU: Controles all operations/jobs,it reads all data into the main memory from an input device;it proceswses the data according to instructions and produces information using an output device.(so it reads data,changes it and produces information for you.
Input device: These devices read incoming data and pass it on to the CPU.Eg: Keyboard,Disk drive,Scanner,Bar code reader,voice recognition,and digital camera.
Output devices: These accept information from the CPU and display the results for the user.Eg; printer,monitor.
Storage devices: These keep information and instructions in the computer so they can be used again.Eg: CDs,floppy disks,hard drive.
Mouse: Used to select text,insert text or a page by clicking and dragging.The cursor changes shape depending on the task.Eg. arrow,beam,egg timer shapes.
Keyboard: Used to type words
Created by: jamiegurl16