21. Which of the following is known as known as father of computer ?
(a) Dennis Ritchie
(b) Napier
(c) Charles Babbage
(d) Alan Turing
22. Abacus can perform :
(a) addition
(b) subtraction
(c) electrical
(d) electronics
23. Microcomputer hardware consists of three basic categories of physical equipment :
(a) keyboard, monitor, hard drive
(b) system unit, input/output, memory
(c) system unit, input/output, secondary storage
(d) system unit, primary storage, secondary storage
24. A ………… is a large and expensive computer capable of performing scientific and business applications :
(a) supercomputer
(b) mainframe computer
(c) minicomputer
(d) handheld computer
25. Which of the following is the smallest and fastest computer imitating brain working ?
(a) super computer
(b) quantum computer
(c) param-10000
(d) IBM chips
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