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Short for personal computer
Program the 'infects' a computer and makes it malfunction
Smallest unit of information handled by a computer, represented by either a 1 or a 0
Failure of either a computer's program or disk drive
Device allowing one computer to communicate with another via a telephone line
Person who illegally gains access to a computer system
Piece of equipment that can be used with a computer, such as a printer or modem
8 bits of information, representing one character of data in memory space
Oldest known mechanical computing aid, used in 6th century China
Internet world in which online communication takes place
Security system desgned to stop outside access to a computer system
Starting point in a hypertext system or an entry page linking other pages in a website
Computer's main circuit board
Transmission speed in sending data from one computer to another
To remove an imperfection or error either in a software program or in the hardware
Program that performs mathematical operations, used for accounting and record keeping
17th-century non-mechanical device for multiplication
Repetition of some function within a program until a terminating condition is reached
External or internal device capable of reading a high-capacity hard disk to store data
Electronic general purpose programmable computer that was first developed at the University of Pennsylvania in 1946
Set of rules governing the communication and exchange of information between machines
Largest and most expensive computers capable of running major businesses
Programs used in data processing
Worldwide network used to communicate
Set of specific, sequenced instructions for solving a problem, especially on a computer
Temporary holding place for information
Combination of sound, graphics, animation, and video
To start or reset a computer program
Printout of a file
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