MCQOPTIONS
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MCQOPTIONS
This section includes 22 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. |
What is the difference between 7490 and a 7492? |
| A. | 7490 is a MOD-12, 7492 is a MOD-10 |
| B. | 7490 is a MOD-12, 7492 is a MOD-16 |
| C. | 7490 is a MOD-16, 7492 is a MOD-10 |
| D. | 7490 is a MOD-10, 7492 is a MOD-12 |
| Answer» E. | |
| 2. |
Integrated-circuit counter chips are used in numerous applications including ____________ |
| A. | Timing operations, counting operations, sequencing, and frequency multiplication |
| B. | Timing operations, counting operations, sequencing, and frequency division |
| C. | Timing operations, decoding operations, sequencing, and frequency multiplication |
| D. | Data generation, counting operations, sequencing, and frequency multiplication |
| Answer» C. Timing operations, decoding operations, sequencing, and frequency multiplication | |
| 3. |
Ripple counter IC has _____________ |
| A. | 10 pins |
| B. | 11 pins |
| C. | 12 pins |
| D. | 14 pins |
| Answer» E. | |
| 4. |
List which pins need to be connected together on a 7493 to make a MOD-12 counter. |
| A. | 12 to 1, 11 to 3, 9 to 2 |
| B. | 12 to 1, 11 to 3, 12 to 2 |
| C. | 12 to 1, 11 to 3, 8 to 2 |
| D. | 12 to 1, 11 to 3, 1 to 2 |
| Answer» D. 12 to 1, 11 to 3, 1 to 2 | |
| 5. |
The set inputs are used in a decade counter, why? |
| A. | To set the counter to 0011 |
| B. | To set the counter to 1000 |
| C. | To set the counter to 1001 |
| D. | To set the counter to 0001 |
| Answer» D. To set the counter to 0001 | |
| 6. |
Reset inputs are used in IC 7490, why? |
| A. | For increment of bit by 1 |
| B. | For decrement of bit by 1 |
| C. | For reset the counter |
| D. | For setting the counter |
| Answer» D. For setting the counter | |
| 7. |
In a 4-bit decade counter, four master-slave flip-flops are internally connected to provide a ________ bit counter. |
| A. | Divide-by-2 & divide-by-6 |
| B. | Divide-by-6 & divide-by-8 |
| C. | Divide-by-2 & divide-by-5 |
| D. | Divide-by-4 & divide-by-8 |
| Answer» D. Divide-by-4 & divide-by-8 | |
| 8. |
Which of the following is a decade counter? |
| A. | IC 7493 |
| B. | IC 7490 |
| C. | IC 7491 |
| D. | IC 7492 |
| Answer» C. IC 7491 | |
| 9. |
IC 7493 consist of ____________ |
| A. | 4 S-R flip-flop |
| B. | 4 J-K flip-flop |
| C. | 4 master-slave flip-flop |
| D. | 4 D flip-flop |
| Answer» D. 4 D flip-flop | |
| 10. |
How many different states does a 2-bit asynchronous counter have? |
| A. | 1 |
| B. | 4 |
| C. | 2 |
| D. | 8 |
| Answer» C. 2 | |
| 11. |
What is the difference between a 7490 and a 7493? |
| A. | 7490 is a MOD-10, 7493 is a MOD-16 |
| B. | 7490 is a MOD-16, 7493 is a MOD-10 |
| C. | 7490 is a MOD-12, 7493 is a MOD-16 |
| D. | 7490 is a MOD-10, 7493 is a MOD-12 |
| Answer» B. 7490 is a MOD-16, 7493 is a MOD-10 | |
| 12. |
IN_A_4-BIT_DECADE_COUNTER,_FOUR_MASTER-SLAVE_FLIP-FLOPS_ARE_INTERNALLY_CONNECTED_TO_PROVIDE_A__________BIT_COUNTER.?$ |
| A. | Divide-by-2 & divide-by-6 |
| B. | Divide-by-6 & divide-by-8 |
| C. | Divide-by-2 & divide-by-5 |
| D. | Divide-by-4 & divide-by-8 |
| Answer» D. Divide-by-4 & divide-by-8 | |
| 13. |
The set inputs are used in a decade counter, why?$ |
| A. | To set the counter to 0011 |
| B. | To set the counter to 1000 |
| C. | To set the counter to 1001 |
| D. | To set the counter to 0001 |
| Answer» D. To set the counter to 0001 | |
| 14. |
Reset_inputs_are_used_in_IC_7490,_why?$ |
| A. | For increment of bit by 1 |
| B. | For decrement of bit by 1 |
| C. | For reset the counter |
| D. | None of the Mentioned |
| Answer» D. None of the Mentioned | |
| 15. |
Ripple counter IC has |
| A. | 10 pins |
| B. | 11 pins |
| C. | 12 pins |
| D. | 14 pins |
| Answer» E. | |
| 16. |
List_which_pins_need_to_be_connected_together_on_a_7493_to_make_a_MOD-12_counter. |
| A. | 12 to 1, 11 to 3, 9 to 2 |
| B. | 12 to 1, 11 to 3, 12 to 2 |
| C. | 12 to 1, 11 to 3, 8 to 2 |
| D. | 12 to 1, 11 to 3, 1 to 2 |
| Answer» D. 12 to 1, 11 to 3, 1 to 2 | |
| 17. |
Which of the following is decade counter? |
| A. | IC 7493 |
| B. | IC 7490 |
| C. | IC 7491 |
| D. | IC 7492 |
| Answer» C. IC 7491 | |
| 18. |
In a 4-bit binary ripple counter, four master-slave flip-flops are internally connected to provide a ________ bit counter. |
| A. | Divide-by-2 & divide-by-6 |
| B. | Divide-by-6 & divide-by-8 |
| C. | Divide-by-2 & divide-by-8 |
| D. | Divide-by-4 & divide-by-8 |
| Answer» D. Divide-by-4 & divide-by-8 | |
| 19. |
A reset input is used in IC 7493, why? |
| A. | For increment of bit by 1 |
| B. | For decrement of bit by 1 |
| C. | For reset the counter |
| D. | None of the Mentioned |
| Answer» D. None of the Mentioned | |
| 20. |
IC 7493 consist of |
| A. | 4 S-R flip-flop |
| B. | 4 J-K flip-flop |
| C. | 4 master-slave flip-flop |
| D. | 4 D flip-flop |
| Answer» D. 4 D flip-flop | |
| 21. |
Which one is a 4-bit binary ripple counter? |
| A. | IC 7493 |
| B. | IC 7490 |
| C. | IC 7491 |
| D. | IC 7492 |
| Answer» C. IC 7491 | |
| 22. |
A 12 MHz clock frequency is applied to a cascaded counter containing a modulus-5 counter, a modulus-8 counter, and a modulus-10 counter. The lowest output frequency possible is ________ |
| A. | 10 kHz |
| B. | 20 kHz |
| C. | 30 kHz |
| D. | 60 kHz |
| Answer» D. 60 kHz | |