(21) Screen savers program prevent
(a) Screen flickering
(b) Burn in
(c) Brownouts
(d) Bad sectors
(22) When a computer suddenly stops working it
(a) Crashes
(b) Switches Off
(c) Is said to hang
(d) None of the above
(23) Which of the following items is not an example of an output device?
(a) CRT Monitor
(b) LDC
(c) Dot matrix printer
(d) Voice recognition device
(24) A 16 bit Computer word consists of …… bytes.
(a) 16
(b) 64
(c) 32
(d) None of the above
(25) Which of the following is not an example of system software?
(a) Word Processor
(b) Utility program
(c) Language translator
(d) Operating system