57. All memory units are expressed as powers of ?
58. What is meaning of OMR ?
A.Optical Mark Reader
B.Optical Message Reader
C.Optical Message Render
D.Optical Mark Render
59. What can be considered as basic building blocks of a digital circuit ?
60. Which type of software are device drivers
D.These are type of hardware
61. Which function key is used to check spellings ?
62. Which of following allows two or more users to work on same time ?
63. Which of following is not a valid bus in computer system ?
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