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Hardware Terms

TermDefinition
Central processing unit (CPU) The chip located inside the system unit of a computer that performs the processing for a computer
GHz – (gigahertz) speed of a processor counted by billions of ticks per second
MHz – (megahertz) speed of a processor counted by millions of ticks per second
System Unit The container that holds the motherboard and keeps components safe.
Motherboard The main circuit board of a computer to which all computer system components connect.
BIOS: Basic Input/Output System Lowest level software in the computer that acts as an interface between the hardware of the operating system.
ROM: Read Only Memory Contain permanently written data called firmware that loads the operating system when first powered on
Cache (CASH) small, high speed memory between the processor and system memory. Faster than RAM
Random access memory (RAM) provides a high speed, temporary location for the computer to hold data and program instructions
Bit The smallest unit of computing, consists of either a 0 or 1 (on or off)
Byte 8 bits makes 1 byte
Video Graphic Adapter Enables the connection of a monitor and may provide additional graphics capabilities
Network Interface Card Enables a PC to connect to a network
Optical Drive Adds read and write capabilities to your computer for portability
Monitor A display device that projects images onto a display screen
Sound Card A device which can be slotted into a computer to allow the use of audio components for multimedia applications.
Video Card A printed circuit board controlling output to a display screen
GB (Gigabyte) A unit of information equal to one billion (109) or, strictly, 230 bytes.
TB (Terabyte) A unit of information equal to one million million (1012) or, strictly, 240 bytes.
Power Supply A device used to convert electricity to power for a computer to use
Created by: Tanpow
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