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Computer Terms

Central processing unit (CPU) The chip located inside the system unit of a computer that performs the processing for a computer
Gigahertz (GHz) Speed of a processor counted by *billions* of ticks per second
Megahertz (MHz) 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
Basic input/output system (BIOS) Lowest level software in the computer that acts as an interface between the hardware and the operating system
Read only memory (ROM) Contain permanently written data called firmware that loads the operating system when first powered on
Cache Small, high-speed memory between the processor and system memory. Faster than RAM
Hard disk drive (HDD) A storage system consisting of one or more metal magnetic disks permanently sealed with an access mechanism inside its drive
Megabyte (MB) Storage measurement in millions of bytes
Gigabyte (GB) Storage measurement in billions of bytes
Terabyte (TB) Storage measurement in trillions of bytes
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 a 0 or 1 (ON or OFF)
Byte 8 bits makes 1
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
Created by: gabrielsmith