21. Microprocessors can be used to make :
(a) computer
(b) digital system
(c) calculators
(d) All of these
22. The communication line between CPU memory and Peripherals is called a :
(a) bus
(b) line
(c) media
(d) All of these
23. The most frequently used instructions of a computer program are likely to be fetched from :
(a) hard disk
(b) cache memory
(c) RAM
(d) ROM
24. The basic goal of computer process is to convert the data into :
(a) files
(b) tables
(c) information
(d) graphs
25. CPU retrieves its data and instruction from :
(a) secondary memory
(b) auxiliary memory
(c) main memory
(d) none of these
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