MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
3 bits full adder contains ________ |
| A. | 3 combinational inputs |
| B. | 4 combinational inputs |
| C. | 6 combinational inputs |
| D. | 8 combinational inputs |
| Answer» E. | |
| 2. |
The carry propagation can be expressed as ________ |
| A. | Cp = AB |
| B. | Cp = A + B |
| C. | All but Y0 are LOW |
| D. | All but Y0 are HIGH |
| Answer» C. All but Y0 are LOW | |
| 3. |
For the device shown here, assume the D input is LOW, both S inputs are LOW and the input is LOW. What is the status of the Y’ outputs? |
| A. | All are HIGH |
| B. | All are LOW |
| C. | All but Y0 are LOW |
| D. | All but Y0 are HIGH |
| Answer» E. | |
| 4. |
For a two-input XNOR gate, with the input waveforms as shown below, which output waveform is correct? |
| A. | d |
| B. | a |
| C. | c |
| D. | b |
| Answer» B. a | |
| 5. |
The device shown here is most likely a ________ |
| A. | Comparator |
| B. | Multiplexer |
| C. | Inverter |
| D. | Demultiplexer |
| Answer» E. | |
| 6. |
Which of the following logic expressions represents the logic diagram shown? |
| A. | X=AB’+A’B |
| B. | X=(AB)’+AB |
| C. | X=(AB)’+A’B’ |
| D. | X=A’B’+AB |
| Answer» E. | |
| 7. |
Which of the circuits in figure (a to d) is the sum-of-products implementation of figure (e)? |
| A. | a |
| B. | b |
| C. | c |
| D. | is the sum-of-products implementation of figure ( |
| E. | ? a) ab) bc) cd) d |
| Answer» E. ? a) ab) bc) cd) d | |
| 8. |
THE_CARRY_PROPAGATION_CAN_BE_EXPRESSED_AS_________?$ |
| A. | Cp = AB |
| B. | Cp = A + B |
| C. | Cp = A XOR B |
| D. | Cp = A + B’ |
| Answer» C. Cp = A XOR B | |
| 9. |
3_bits_full_adder_contains$ |
| A. | 3 combinational inputs |
| B. | 4 combinational inputs |
| C. | 6 combinational inputs |
| D. | 8 combinational inputs |
| Answer» E. | |