21. What is the main function of the central processing unit (CPU)?
a) To store data
b) To control the input and output devices
c) To execute instructions
d) To display information
22. Which of the following is an example of an input device?
a) Printer
b) Keyboard
c) Monitor
d) Speakers
23. Which of the following is an example of an output device?
a) Printer
b) Keyboard
c) Mouse
d) Scanner
24. Which type of software is responsible for controlling and coordinating the activities and sharing of resources of a computer?
a) Application software
b) Utility software
c) Operating system software
d) System software
25. Which type of software is designed to perform a specific task, such as word processing or spreadsheet creation?
a) Application software
b) Utility software
c) Operating system software
d) System software
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