Central Processing Unit: The CPU is the brain of the computer The device that carries out the software instructions . CPU's usually plug into a large socket on the main circuit board (motherboard) of a computer. They get very hot when they are operating so usually have a large fat attached to their top to keep cool. Main Memory: The CPU needs to store data whilst it's carrying out the processing required The data or instructions that are to be processed by the CPU must be placed into the Main Memory. Ram: Random Access Memory. A temporary store of data. Holds the data that is currently being used by the user. Volatile- so data is lost when computer is turned off. It can be read from or written to. The data in RAM can be changed. It is needed so that users are able to make changes to the data they are working on/ to store the program or data they are currently using. ROM: Read only memory. Non volatile- not lost whem computer is turned off. Stores things such as:BIOS, programs in washing machine, program instructions for games. The data can not be changed . It is used so that programs/coding/software can be stored permanently / cannot be changed. |
Definitions
Hardware:The machines, wiring, and other physical components of a computer that you can touch.
Software: Its is the term for the programs that control the computer system.For Instance Impero, Windows 7 and Chrome.
Components of Computors:
Exam Questions:
RAM is not Volatile: F
ROM is used to store the BiOS of a computer:T
The data in ROM is easier to change than that in RAM:F
RAM is used to store the data the user is currently using:T
Storing data that the user is currently working on : RAM
Storing the system BiOS : ROM
Storing program instructions computer games: ROM
RAM is not Volatile: F
ROM is used to store the BiOS of a computer:T
The data in ROM is easier to change than that in RAM:F
RAM is used to store the data the user is currently using:T
Storing data that the user is currently working on : RAM
Storing the system BiOS : ROM
Storing program instructions computer games: ROM