MCQOPTIONS
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MCQOPTIONS
This section includes 18 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. |
In order to check the CLR function of a counter ____________ |
| A. | Apply the active level to the CLR input and check all of the Q outputs to see if they are all in their reset state |
| B. | Ground the CLR input and check to be sure that all of the Q outputs are LOW |
| C. | Connect the CLR input to Vcc and check to see if all of the Q outputs are HIGH |
| D. | Connect the CLR to its correct active level while clocking the counter; check to make sure that all of the Q outputs are toggling |
| Answer» B. Ground the CLR input and check to be sure that all of the Q outputs are LOW | |
| 2. |
The hexadecimal equivalent of 15,536 is ________ |
| A. | 3CB0 |
| B. | 3C66 |
| C. | 63C0 |
| D. | 6300 |
| Answer» B. 3C66 | |
| 3. |
In a 3-bit asynchronous down counter, at the first negative transition of the clock, the counter content becomes ____________ |
| A. | 000 |
| B. | 111 |
| C. | 101 |
| D. | 010 |
| Answer» C. 101 | |
| 4. |
In a 3-bit asynchronous down counter, the initial content is ____________ |
| A. | 000 |
| B. | 111 |
| C. | 010 |
| D. | 101 |
| Answer» B. 111 | |
| 5. |
In a down counter, which flip-flop doesn’t toggle when the inverted output of the preceeding flip-flop goes from HIGH to LOW. |
| A. | MSB flip-flop |
| B. | LSB flip-flop |
| C. | Master slave flip-flop |
| D. | Latch |
| Answer» C. Master slave flip-flop | |
| 6. |
DOWN counter is ____________ |
| A. | It counts in upward manner |
| B. | It count in downward manner |
| C. | It counts in both the direction |
| D. | Toggles between Up and Down count |
| Answer» C. It counts in both the direction | |
| 7. |
UP Counter is ____________ |
| A. | It counts in upward manner |
| B. | It count in down ward manner |
| C. | It counts in both the direction |
| D. | Toggles between Up and Down count |
| Answer» B. It count in down ward manner | |
| 8. |
A down counter using n-flip-flops count ______________ |
| A. | Downward from a maximum count |
| B. | Upward from a minimum count |
| C. | Downward from a minimum to maximum count |
| D. | Toggles between Up and Down count |
| Answer» B. Upward from a minimum count | |
| 9. |
IN_A_3-BIT_ASYNCHRONOUS_DOWN_COUNTER,_AT_THE_FIRST_NEGATIVE_TRANSITION_OF_THE_CLOCK,_THE_COUNTER_CONTENT_BECOMES?$ |
| A. | 000 |
| B. | 111 |
| C. | 101 |
| D. | 010 |
| Answer» D. 010 | |
| 10. |
In order to check the CLR function of a counter$ |
| A. | Apply the active level to the CLR input and check all of the Q outputs to see if they are all in their reset state |
| B. | Ground the CLR input and check to be sure that all of the Q outputs are LOW |
| C. | Connect the CLR input to Vcc and check to see if all of the Q outputs are HIGH |
| D. | Connect the CLR to its correct active level while clocking the counter; check to make sure that all of the Q outputs are toggling |
| Answer» B. Ground the CLR input and check to be sure that all of the Q outputs are LOW | |
| 11. |
The_hexadecimal_equivalent_of_15,536_is_________$ |
| A. | 3CB0 |
| B. | 3C66 |
| C. | 63C0 |
| D. | 6300 |
| Answer» B. 3C66 | |
| 12. |
In a 3-bit asynchronous down counter, at the first negative transition of the clock, the counter content become? |
| A. | 000 |
| B. | 111 |
| C. | 101 |
| D. | 010 |
| Answer» C. 101 | |
| 13. |
In a 3-bit asynchronous down counter, the initial content is |
| A. | 000 |
| B. | 111 |
| C. | 010 |
| D. | 101 |
| Answer» B. 111 | |
| 14. |
In a down counter, which flip-flop doesn’t toggle when the inverted output of the preceeding flip-flop goes from HIGH to LOW.$ |
| A. | MSB flip-flop |
| B. | LSB flip-flop |
| C. | Master slave flip-flop |
| D. | None of the Mentioned |
| Answer» C. Master slave flip-flop | |
| 15. |
How many different states does a 3-bit asynchronous down counter have? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» E. | |
| 16. |
DOWN counter is |
| A. | It counts in upward manner |
| B. | It count in downward manner |
| C. | It counts in both the direction |
| D. | None of the mentioned |
| Answer» C. It counts in both the direction | |
| 17. |
UP Counter is |
| A. | It counts in upward manner |
| B. | It count in down ward manner |
| C. | It counts in both the direction |
| D. | None of the mentioned |
| Answer» B. It count in down ward manner | |
| 18. |
A down counter using n-flip-flops count |
| A. | Downward from a maximum count |
| B. | Upward from a minimum count |
| C. | Downward from a minimum to maximum count |
| D. | None of the Mentioned |
| Answer» B. Upward from a minimum count | |