Computer components Flashcards
CPU
The central processing unit is the brain of the computer that fetches, decodes and executes instructions.
CU
The control unit is a component of the CPU that directs the operation of the processor
ALU
The arithmetic logic unit is the part of the CPU that carries out arithmetic and logic operations
Cache
A component of the CPU that is a small fast memory that stores decoded, frequently used instructions. It decreases transfer time and speeds up the cycle.
Fetch Execute cycle
The basic operation of a computer that fetches information from the memory and executes it.
Motherboard
The main printed circuit board in a computer which means that its the primary piece of circuitry that all the other pieces plug into.
Power supply
Converts the alternating current (AC) to a low voltage direct current (DC) for the internal components of a computer
Optical storage
Any storage of data which is written and read by a lasers
Magnetic storage
The storage of data on a magnetised medium
Solid state media
A type of storage media that is stored electronically with no moving parts
Registers
The smallest and fastest memory in a computer that temporarily holds frequently used instructions and data to be used by the CPU
RAM
The random access memory is the main memory that is volatile and stores data for programs that are currently running.
ROM
Read only memory that stores non volatile, permanent data that can only be read such as the boot up instructions on a computer
