A) Word processing software
B) An operating system
C) A printer attached
D) A virus checking program
E) None of these
Correct Answer: B
Solution :
The operating system is the most important program that runs on a computer. Every general-purpose computer most I have an operating system to run |other programs. Operating system perform basic tasks, such as recognizing input from the keyboard, sending output of the display screen, keeping back or files and directories on the disk, and controlling peripheral devices such as disk drives and printers.
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