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The Computer Dictionary

Look up definitions of computer and Internet terms.

Term of the Day

Today • January 7

Operating System

Operating System

An operating system (OS) is software that controls a computer's core functions. It communicates with the hardware and allows programs to run. The OS contains system software necessary for your computer to boot up and function and may include ... Read More

Today's Quiz Question

A "Page Not Found" error on a website is also known by what error code?

A
401
0%
B
404
0%
C
500
0%
D
503
0%
Correct! Incorrect!     View the 404 Error definition.
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