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  • Question

  • For the minterm designation Y = ? m (1, 3, 5, 7) the complete expression is


  • Options
  • A. Y = A BC + A B C
  • B. Y = A B C + A B C + ABC + A BC
  • C. Y = A B C + A B C + ABC + A BC
  • D. Y = A B C + ABC + A BC + A BC

  • Correct Answer
  • Y = A B C + A B C + ABC + A BC 

    Explanation
    Decimal number 1 = binary number 001 = A BC Decimal number 7 = binary number 111= ABC, Decimal number 3 = binary number 011= ABC Decimal number 5 = binary number 101= ABC . Hence result.

    Digital Electronics problems

    Search Results

    • 1. The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is

    • Options
    • A. - 256
    • B. - 128
    • C. - 255
    • D. - 127
      • Discuss
    • 2. Which device has one input and many outputs?

    • Options
    • A. Multiplexer
    • B. Demultiplexer
    • C. Counter
    • D. Flip flop
      • Discuss
    • 3. In a ripple counter,

    • Options
    • A. whenever a flip flop sets to 1, the next higher FF toggles
    • B. whenever a flip flop sets to 0, the next higher FF remains unchanged
    • C. whenever a flip flop sets to 1, the next higher FF faces race condition
    • D. whenever a flip flop sets to 0, the next higher FF faces race condition
      • Discuss
    • 4. 2's complement of binary number 0101 is

    • Options
    • A. 1011
    • B. 1111
    • C. 1101
    • D. 1110
      • Discuss
    • 5. A memory system of size 16 k bytes is to be designed using memory chips which have 12 address lines and 4 data lines each. The number of such chips required to design the memory system is

    • Options
    • A. 2
    • B. 4
    • C. 8
    • D. 18
      • Discuss
    • 6. A ring counter with 5 flip flops will have

    • Options
    • A. 5 states
    • B. 10 states
    • C. 32 states
    • D. infinite states
      • Discuss
    • 7. The resolution of an n bit DAC with a maximum input of 5 V is 5 mV. The value of n is

    • Options
    • A. 8
    • B. 9
    • C. 10
    • D. 11
      • Discuss
    • 8. An AND gate has two inputs A and B and one inhibit input 3, Output is 1 if

    • Options
    • A. A = 1, B = 1, S = 1
    • B. A = 1, B = 1, S = 0
    • C. A = 1, B = 0, S = 1
    • D. A = 1, B = 0, S = 0
      • Discuss
    • 9. The fixed count that should be used so that the output register will represent the input for a 6 bit dual slope A/D converter uses a reference of -6v and a 1 MHz clock. It uses a fixed count of 40 (101000).

    • Options
    • A. 000110
    • B. 0010
    • C. 1111
    • D. 011101
      • Discuss
    • 10. The output of a half adder is

    • Options
    • A. SUM
    • B. CARRY
    • C. SUM and CARRY
    • D. none of the above
      • Discuss

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