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  • Question
  • Convert the decimal numbers 275 and 965 to binary-coded decimal (BCD) and add. Select the BCD code groups that reflect the final answer.


  • Options
  • A. 1101 1110 1010
  • B. 1110 1010 1110
  • C. 0001 0010 0100 0000
  • D. 0010 0011 0100 0000

  • Correct Answer
  • 0001 0010 0100 0000 


  • Digital Arithmetic Operations and Circuits problems


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    • 1. Multiply the following binary numbers.

      1010   1011   1001
      ×0011   ×0111   ×1010

    • Options
    • A. 0001  1110    0100  1101    0101  1011
    • B. 0001  1110    0100  1100    0101  1010
    • C. 0001  1110    0100  1101    0101  1010
    • D. 0001  1101    0100  1101    0101  1010
    • Discuss
    • 2. Add the following hexadecimal numbers.

      3C   14   3B
      +25   +28   +DC

    • Options
    • A. 60    3C    116
    • B. 62    3C    118
    • C. 61    3C    117
    • D. 61    3D    117
    • Discuss
    • 3. A full-adder adds ________.

    • Options
    • A. two single bits and one carry bit
    • B. two 2-bit binary numbers
    • C. two 4-bit binary numbers
    • D. two 2-bit numbers and one carry bit
    • Discuss
    • 4. When performing subtraction by addition in the 2's-complement system:

    • Options
    • A. the minuend and the subtrahend are both changed to the 2's-complement.
    • B. the minuend is changed to 2's-complement and the subtrahend is left in its original form.
    • C. the minuend is left in its original form and the subtrahend is changed to its 2's-complement.
    • D. the minuend and subtrahend are both left in their original form.
    • Discuss
    • 5. The most commonly used system for representing signed binary numbers is the:

    • Options
    • A. 2's-complement system.
    • B. 1's-complement system.
    • C. 10's-complement system.
    • D. sign-magnitude system.
    • Discuss
    • 6. Solve this binary problem:

    • Options
    • A. 11001001
    • B. 10010000
    • C. 01101110
    • D. 01110110
    • Discuss
    • 7. What are the two types of basic adder circuits?

    • Options
    • A. sum and carry
    • B. half-adder and full-adder
    • C. asynchronous and synchronous
    • D. one- and two's-complement
    • Discuss
    • 8. What is the first thing you will need if you are going to use a macrofunction?

    • Options
    • A. A complicated design project
    • B. An experienced design engineer
    • C. Good documentation
    • D. Experience in HDL
    • Discuss
    • 9. Binary subtraction of a decimal 15 from 43 will utilize which two's complement?

    • Options
    • A. 101011
    • B. 110000
    • C. 011100
    • D. 110001
    • Discuss
    • 10. The selector inputs to an arithmetic/logic unit (ALU) determine the:

    • Options
    • A. selection of the IC
    • B. arithmetic or logic function
    • C. data word selection
    • D. clock frequency to be used
    • Discuss


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