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Computer Basics

TermDefinition
Central Processing Unit (CPU) Brain of the computer that performs instructions defined by software
Hard Drive Storage device that stores digitally encoded data on rapidly rotating rigid disks with magnetic surfaces. The device is either permanently installed within the computer case or can be portable
Motherboard Printed circuit board on which the CPU, RAM chips and other electronic circuit elements of a digital computer are frequently located.
RAM Random Access Memory - temporary place to store material that works quickly. erased when computer turns off. Volatile.
Software Set of instructions that tells the hardware what to do. It is what guides the hardware and tells it how to accomplish each task.
Power Supply A device that provides power to a computer.
Input device used to insert data into a computer or other device (ex: keyboard, mouse, microphone, scanner, voice recognition)
Output device that projects images, gives sound, and basically gives out the info from the computer so the user can obtain it (ex: monitor, printer, projector, speakers)
ROM Read Only Memory- Permanent instructions that cannot be changed. It makes the BIOS function. Checks your OS.
Hardware the physical, tangible, parts of a computer
Program Instructions that tell a computer what to do
bit A contraction of "Binary Digit". A bit is the single unit of information in a computer, typically represented as a 0 or 1.
Byte 8 bits
Kilobyte (KB) 1024 bytes
Megabyte (MB) 1,024 kilobytes, 1 million bytes
Gigabyte (GB) 1,024, megabytes, 1 billion bytes
Terabyte (TB) 1,024 gigabytes or approximately 1 trillion bytes
Binary The binary number system is base 2, using only bits 0 and 1.
Operating System (OS) Software used to control the computer and its peripheral equipment. Software used to control the computer and its peripheral equipment.
System A group of parts that work together as a whole
Created by: Stprice
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