MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Microprocessors knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
THE_ATLEAST_NUMBER_OF_MACHINE_CYCLES_FOR_WHICH_THE_EXTERNAL_INTERRUPTS_THAT_ARE_PROGRAMMED_LEVEL-SENSITIVE_SHOULD_REMAIN_HIGH_IS?$ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 0 |
| Answer» C. 3 | |
| 2. |
If_the_external_interrupts_are_programmed_edge_sensitive,_then_they_should_remain_high_for_atleast$ |
| A. | 0 machine cycle |
| B. | 2 machine cycles |
| C. | 1 machine cycle |
| D. | 3 machine cycles |
| Answer» D. 3 machine cycles | |
| 3. |
In serial port interrupt, after the control is transferred to the interrupt service routine, the flag that is cleared i? |
| A. | RI |
| B. | TI |
| C. | RI and TI |
| D. | None |
| Answer» E. | |
| 4. |
The serial port interrupt is generated if |
| A. | RI is set |
| B. | RI and TI are set |
| C. | Either RI or TI is set |
| D. | RI and TI are reset |
| Answer» D. RI and TI are reset | |
| 5. |
In timer mode, the oscillator clock is divided by a prescalar |
| A. | (1/8) |
| B. | (1/4) |
| C. | (1/16) |
| D. | (1/32) |
| Answer» E. | |
| 6. |
The pulses at T0 or T1 pin are counted in |
| A. | timer mode |
| B. | counter mode |
| C. | idle mode |
| D. | power down mode |
| Answer» C. idle mode | |
| 7. |
If the external interrupt sources control the flags IE0 and IE1, then the interrupt programmed is |
| A. | level-sensitive |
| B. | edge-sensitive |
| C. | in serial port |
| D. | in parallel port |
| Answer» B. edge-sensitive | |
| 8. |
The flags IE0 and IE1, are automatically cleared after the control is transferred to respective vector if the interrupt is |
| A. | level-sensitive |
| B. | edge-sensitive |
| C. | in serial port |
| D. | in parallel port |
| Answer» C. in serial port | |
| 9. |
The interrupts, INT0(active low) and INT1(active low) are processed internally by flags |
| A. | IE0 and IE1 |
| B. | IE0 and IF1 |
| C. | IF0 and IE1 |
| D. | IF0 and IF1 |
| Answer» B. IE0 and IF1 | |
| 10. |
Which of the following is an external interrupt? |
| A. | INT0(active low) |
| B. | INT2(active low) |
| C. | Timer0 interrupt |
| D. | Timer1 interrupt |
| Answer» B. INT2(active low) | |