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I.C.T
general theory notes
| Term | Definition |
|---|---|
| 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 |