CPU, Main Memory and Peripheral Devices
There are three main computer components which are :
CPU (Central Processing Unit)
It is the brain of the computer and it carries out the instructions to make the computer function.
Example : Intel
The Main memory stores all the processed data that is or was being processed by the computer.
There are two types of main memory :
- ROM (Read Only Memory)
- RAM (Random Access Memory)
The RAM is a more commonly used system, however it is volatile. Meaning that if the device is switched off, the contents will be missing.
The ROM is a Read Only Memory, it is non-volatile, so if the device is lost, it’s content will be preserved, this is because it has a reboot program called biose.
Peripheral Devices are objects that receive or send data in and out of the computer.
There are three types of Peripheral Devices :
- Input Device
- Output Device
- Backing Storage
The Input devices are things which send data to the computer from the real world.
Examples are : Scanners, keyboards and bamboo tablets.
The Output Devices are objects that send data from or out the computer.
Examples are : Printers and Speakers.
Backing storage are devices that store data from the computer.
Examples are : USB’s and CD’s.
Word count : 220 words ( not including this line )