Q.51 The heart of any computer is the….
(A) CPU
(B) Memory
(C) I/O Unit
(D) Disks
Q.52 A Computer consists of……
(A) a central processing unit
(B) a memory
(C) input and output units
(D) all of these
Q.53 Which of the following is not used as secondary storage?
(A) semiconductor memory
(B) magnetic disks
(C) magnetic drums
(D) magnetic tapes
Q.54 Which of the following memory is capable of operating at electronics speed?
(A) semiconductor memory
(B) magnetic disks
(C) magnetic drums
(D) magnetic tapes
Q.55 Which of the following is responsible for co-ordination various operations using timing signals?
(A) arithmetic logic unit
(B) control unit
(C) memory unit
(D) input/output unit
Q.56 Memories in which any location can be reached in a fixed (and short) amount of time after specifying its address is called.
(A) sequential access memory
(B) random access memory
(C) secondary memory
(D) mass storage
Q.57 Which of the following is the fastest?
(A) CPU
(B) magnetic tapes and disks
(C) video terminal
(D) sensors, mechanical controllers
Q.58 The register which contains the instruction that is to executed is called.
(A) index register
(B) instruction registers
(C) memory address register
(D) memory data register
Q.59 The register which keeps track of the execution of a program and which contains memory address of the instruction currently being executed is called.
(A) index register
(B) memory address register
(C) program counter
(D) instruction registers
Q.60 Register which holds the address of the location to or from which data are to be transferred is called.
(A) index register
(B) instruction registers
(C) memory address register
(D) memory data register
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