Digital Electronics MCQs SET-2

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Hey Guys welcome to CSE Study247 , Today I am provide you Digital Electronics MCQs SET-2.

Which is very Useful for DRDO CEPTAM, ISRO, COPA, CCC, O level, Bank, MTS, Railway, Data Entry Operator, PWD,PHED, Hindustan Aeronautics Ltd., Air India, NTPC, BHEL, GAIL, PGCIL, MTS, SSC, CGL, CHSL,KVS and all other computer exams

This page provide you Digital Electronics Multiple Choice Question Answer that is very useful for Semester , DRDO, ISRO ,Banking , Railway, Gate and another exam.

SET-1 [1 To 20]

Q.21 Which of the following is minimum error code?

  • A) Octal code
  • B) Gray code
  • C) Binary code
  • D) Excess 3-code

Q.22 A NOT gate has-

  • A) Two input and one output
  • B) One input and one output
  • C) One input and two output
  • D) None of these

Q.23 A set of instruction written in computer language is called the?

  • A) Software
  • B) Hardware
  • C) Program
  • D) None of these

Q.24 1’s complement of 10101 is given by?

  • A) 01010
  • B) 01011
  • C) 10101
  • D) 00100

Q.25 The shift register is designed to shift data?

  • A) Only to left changing the order of the nits
  • B) Only to right changing the order of the bits
  • C) Either left or right changing the order of the bits
  • D) Either left or right without changing the order of the bits

Q.26 The 8085 instruction RAL performs the following operations?

  • A) Rotate the content of accumulator to the right
  • B) Rotate the content of accumulator to the left
  • C) Rotate the content of accumulator to the right through carry
  • D) Rotate the content of accumulator to the left through carry

Q.27 Disc and Drum are the

  • A) Hardware part of the computer
  • B) Software part
  • C) Firmware
  • D) None of these

Q.28 Which of the following memories normally has highest storage capacity?

  • A) Magnetic disk
  • B) Magnetic tape
  • C) Semi conductor memory
  • D) Core memory

Q.29 OP-AMP’s can be used to amplify:

  • A) D.C. input signal
  • B) A.C. input signal
  • C) D.C. as well as A.C. input signal
  • D) None of these

Q.30 Number of interrupts of Intel 8085 are?

  • A) 5
  • B) 4
  • C) 2
  • D) 3

Q.31 A program written in mnemonics are called?

  • A) High level language program
  • B) Low level language program
  • C) Assembly level language program
  • D) None of these

Q.32 One of the method is used for A/D conversion is:

  • A) R-2R ladder
  • B) Weighted binary resistors
  • C) Successive approximation
  • D) None of these

Q.33 In a microcomputer-------- is its heart?

  • A) Microprocessor
  • B) ALU
  • C) Control Unit
  • D) None of these

Q.34 An R-S flip flop cannot be used to design T-type flip flop as?

  • A) R=0, S=1 is not permitted
  • B) R=0, S=0 is not permitted
  • C) R=1, S=0 is not permitted
  • D) R=1, S=1 is not permitted

Q.35 In Boolean Algebra the plus sign (+) indicates

  • A) AND Operation
  • B) OR Operation
  • C) NOT Operation
  • D) None

Q.36 Flip flop comes under the category of ?

  • A) 2- bit storage device
  • B) 1- bit storage device
  • C) Multi bit storage device
  • D) None of these

Q.37 Extremely low power dissipation and low cost can be achieved in?

  • A) MOS ICs
  • B) CMOS ICs
  • C) TTL ICs
  • D) ECL ICs

Q.38 The 8085 instruction INR r comes in the category ?

  • A) Machine control group
  • B) Branch group
  • C) Arithmetic group
  • D) Data transfer group

Q.39 An ideal OP-AMP has?

  • A) Infinite Av
  • B) Infinite Ri
  • C) Zero
  • D) All of the above

Q.40 Which of the following Boolean rules is correct?

  • A) A + 0 = 0
  • B) A + 1 = 1
  • C) A + A compliment =A.A
  • D) A + AB = A compliment +B

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