MCQOPTIONS
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MCQOPTIONS
This section includes 21 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. |
Fundamental mode is another name for ____________ |
| A. | Level operation |
| B. | Pulse operation |
| C. | Clock operation |
| D. | Edge operation |
| Answer» C. Clock operation | |
| 2. |
Program counter in a digital computer ____________ |
| A. | Counts the number of programs run in the machine |
| B. | Counts the number of times a subroutine |
| C. | Counts the number of time the loops are executed |
| D. | Points the memory address of the current or the next instruction |
| Answer» E. | |
| 3. |
High speed counter is ____________ |
| A. | Ring counter |
| B. | Ripple counter |
| C. | Synchronous counter |
| D. | Asynchronous counter |
| Answer» D. Asynchronous counter | |
| 4. |
What is a state diagram? |
| A. | It provides the graphical representation of states |
| B. | It provides exactly the same information as the state table |
| C. | It is same as the truth table |
| D. | It is similar to the characteristic equation |
| Answer» C. It is same as the truth table | |
| 5. |
MOD-16 counter requires ________ no. of states. |
| A. | 8 |
| B. | 4 |
| C. | 16 |
| D. | 32 |
| Answer» D. 32 | |
| 6. |
Normally, the synchronous counter is designed using ____________ |
| A. | S-R flip-flops |
| B. | J-K flip-flops |
| C. | D flip-flops |
| D. | T flip-flops |
| Answer» C. D flip-flops | |
| 7. |
The duty cycle of the most significant bit from a 4-bit (0–9) BCD counter is ____________ |
| A. | 20% |
| B. | 50% |
| C. | 10% |
| D. | 80% |
| Answer» B. 50% | |
| 8. |
The minimum number of flip-flops that can be used to construct a modulus-5 counter is ____________ |
| A. | 3 |
| B. | 8 |
| C. | 5 |
| D. | 10 |
| Answer» B. 8 | |
| 9. |
The ________ counter in the Altera library has controls that allow it to count up or down, and perform synchronous parallel load and asynchronous cascading. |
| A. | 74134 |
| B. | LPM |
| C. | Synchronous |
| D. | AHDL |
| Answer» C. Synchronous | |
| 10. |
In general, when using a scope to troubleshoot digital systems, the instrument should be triggered by ____________ |
| A. | The A channel or channel 1 |
| B. | The vertical input mode, when using more than one channel |
| C. | The system clock |
| D. | Line sync, in order to observe troublesome power line glitches |
| Answer» D. Line sync, in order to observe troublesome power line glitches | |
| 11. |
A sequential circuit design is used to ____________ |
| A. | Count up |
| B. | Count down |
| C. | Decode an end count |
| D. | Count in a random order |
| Answer» E. | |
| 12. |
Modulus refers to ____________ |
| A. | A method used to fabricate decade counter units |
| B. | The modulus of elasticity, or the ability of a circuit to be stretched from one mode to another |
| C. | An input on a counter that is used to set the counter state, such as UP/DOWN |
| D. | The maximum number of states in a counter sequence |
| Answer» E. | |
| 13. |
MOD-16_COUNTER_REQUIRES__________NO._OF_STATES.?$ |
| A. | 8 |
| B. | 4 |
| C. | 16 |
| D. | 32 |
| Answer» D. 32 | |
| 14. |
High speed counter is$ |
| A. | Ring counter |
| B. | Ripple counter |
| C. | Synchronous counter |
| D. | Asynchronous counter |
| Answer» D. Asynchronous counter | |
| 15. |
Normally, synchronous counter is designed usin? |
| A. | S-R flip-flops |
| B. | J-K flip-flops |
| C. | D flip-flops |
| D. | T flip-flops |
| Answer» C. D flip-flops | |
| 16. |
The duty cycle of the most significant bit from a 4-bit (0–9) BCD counter is$ |
| A. | 20% |
| B. | 50% |
| C. | 10% |
| D. | 80% |
| Answer» B. 50% | |
| 17. |
The minimum number of flip-flops that can be used to construct a modulus-5 counter is |
| A. | 3 |
| B. | 8 |
| C. | 5 |
| D. | 10 |
| Answer» B. 8 | |
| 18. |
Which counters are often used whenever pulses are to be counted and the results displayed in decimal? |
| A. | Synchronous |
| B. | Bean |
| C. | Decade |
| D. | BCD |
| Answer» E. | |
| 19. |
In general, when using a scope to troubleshoot digital systems, the instrument should be triggered by |
| A. | The A channel or channel 1 |
| B. | The vertical input mode, when using more than one channel |
| C. | The system clock |
| D. | Line sync, in order to observe troublesome power line glitches |
| Answer» D. Line sync, in order to observe troublesome power line glitches | |
| 20. |
A sequential circuit design is used to |
| A. | Count up |
| B. | Count down |
| C. | Decode an end count |
| D. | Count in a random order |
| Answer» E. | |
| 21. |
Modulus refers to |
| A. | A method used to fabricate decade counter units |
| B. | The modulus of elasticity, or the ability of a circuit to be stretched from one mode to another |
| C. | An input on a counter that is used to set the counter state, such as UP/DOWN |
| D. | The maximum number of states in a counter sequence |
| Answer» E. | |