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Computer Hardware


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Clock Speed
This factor determines how many operations a CPU can carry out per unit time
Cores
"A single CPU may contain numerous individual processors, called ..."
Binary
Number system in base 2 that computers use to represent data and instructions
ROM
Type of non-volatile memory that holds crucial information such as the boot program
RAM
"Main memory of a computer that stores data, applications and the operating system whilst in use"
Volatile
Term used to describe memory that requires power to maintain the data stored within it
Virtual memory
Type of memory that combines your computers RAM with temporary space on your hard disk
Cache
"A small, high-speed type of memory that stores frequently used instructions or data"
ALU
Part of the CPU that performs all of the arithmetic and logical functions
Control unit
Part of the CPU that co-ordinates the flow of data within the computer system
Bus
Part of a computer architecture that transfers data between different computer components
Motherboard
Central printed circuit board that holds the different computer components
Flash storage
"Memory type used by SSDs, USB drives and SD cards (derived from solid-state storage)"
Input Device
Any hardware device used to enter data into a computer system for processing
Output Device
Any hardware device used to present processed information to users
Secondary Storage
Non-volatile method for storing large amounts of data for long term use
Optical
"Category of storage device which involves the use of lasers to read and write data, e.g. CD, DVD"
Magnetic
Category of storage device which includes traditional hard drives and floppy disks
Solid State
Category of storage device that does not use any moving parts
Blu-ray
A high-capacity type of optical disk pioneered by Sony for the storage of HD films and video games
Actuator
"Mechanical device that is controlled by computers, e.g. robotic arm, motor"
Sensor
"A device that can detect a physical property and records, indicates or responds to it"