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Digital Computer Electronics problems


  • 1. How many bytes are there in 1011 1001 0110 1110 numbers?

  • Options
  • A. 1
  • B. 2
  • C. 4
  • D. 8
  • E. None of the above
  • Discuss
  • 2. Which of the following boolean algebra statements represent commutative law

  • Options
  • A. (A+B)+CA+(B+C)
  • B. A.(B+C)(A.B)+(A.C)
  • C. A+BB+A
  • D. A+AA
  • E. None of the above
  • Discuss
  • 3. A NOR gate recognizes only the input word whose bits are _____

  • Options
  • A. 0's and 1's
  • B. 1's
  • C. 0's
  • D. 0's or 1's
  • E. None of the above
  • Discuss
  • 4. A microcomputer is a computer that uses a _____ for its CPU.

  • Options
  • A. chips
  • B. registers
  • C. microprocessor
  • D. vacuum tube
  • E. None of the above
  • Discuss
  • 5. Which of the following logic expression is wrong?

  • Options
  • A. 1 + 0=1
  • B. 1 + 1=0
  • C. 1+0+1 = 1
  • D. 1 + 1 + 1 = 1
  • E. None of the above
  • Discuss
  • 6. Subtraction of 1001011002 from 11101010102 is

  • Options
  • A. 10010111102
  • B. 01101000012
  • C. 11110000012
  • D. 11110111112
  • E. None of the above
  • Discuss
  • 7. Parallel adders are

  • Options
  • A. combinational logic circuits
  • B. sequential logic circuits
  • C. both of the above
  • D. All of the above
  • E. None of the above
  • Discuss
  • 8. Consider as RS flip-flops with both inputs set to 0. If a momentary '1' is applied at the input S, then the output

  • Options
  • A. Q will flip from 0 to 1
  • B. Q will flip from 0 to 1 and then back to 0
  • C. Q will flip from 0 to 1
  • D. Q will flip from 0 to 1 and then back to 0
  • E. None of the above
  • Discuss
  • 9. The 2's compliment of binary number 0.01011 is:

  • Options
  • A. 1.10101
  • B. 0.10101
  • C. 1.10100
  • D. 0.10100
  • E. None of the above
  • Discuss
  • 10. Conversion of hexadecimal number 93FA16 to it's binary number equivalent is

  • Options
  • A. 10010011111110102
  • B. 100100111111101112
  • C. 1100111111100112
  • D. 1111100001112
  • E. None of the above
  • Discuss

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