software - programs and program instructions, Hardware - mechanical and electronic equipment, Expandable - 8GB of RAM is _________ to 32GB., Peripherals - physical units attached to the computer, Gigahertz  - a unit of frequency for measuring processor speed, CPU - the brain of the computer, Volatile - temporary, Expansion slot - a place in a computer circuit where an expansion card can be added, Bus - electronic channel which allows communication between the devices inside the computer, Monitor - an output device which displays data, Binary - a type of a system using 1 and 0, Specs - specifications, Back up - to make an extra copy of information, Register - a high-speed unit of memory used to store and control data, Motherboard - the main circuit board inside the computer,

PC system

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