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_COUNTER_STARTS_COUNTING_ONLY_IF?$ |
| A. | GATE signal is low |
| B. | GATE signal is high |
| C. | CLK signal is low |
| D. | CLK signal is high |
| Answer» C. CLK signal is low | |
| 2. |
The_control_word_register_contents_are_used_for$ |
| A. | initializing the operating modes |
| B. | selection of counters |
| C. | choosing binary/BCD counters |
| D. | all of the mentioned |
| Answer» E. | |
| 3. |
If BCD=0, then the operation i? |
| A. | decimal count |
| B. | hexadecimal count |
| C. | binary count |
| D. | octal count |
| Answer» C. binary count | |
| 4. |
In control word format, if RL1=1, RL0=1 then the operation performed is |
| A. | read/load least significant byte only |
| B. | read/load most significant byte only |
| C. | read/load LSB first and then MSB |
| D. | read/load MSB first and then LSB |
| Answer» D. read/load MSB first and then LSB | |
| 5. |
In control word register, if SC1=0 and SC0=1, then the counter selected is |
| A. | counter 0 |
| B. | counter 1 |
| C. | counter 2 |
| D. | none |
| Answer» C. counter 2 | |
| 6. |
The generation of a square wave is possible in the mode |
| A. | mode 1 |
| B. | mode 2 |
| C. | mode 3 |
| D. | mode 4 |
| Answer» D. mode 4 | |
| 7. |
In mode 2, if N is loaded as the count value, then after (N-1) cycles, the output becomes low for |
| A. | 1 clockcycle |
| B. | 2 clockcycles |
| C. | 3 clockcycles |
| D. | 4 clockcycles |
| Answer» B. 2 clockcycles | |
| 8. |
The mode that is used to interrupt the processor by setting a suitable terminal count is |
| A. | mode 0 |
| B. | mode 1 |
| C. | mode 2 |
| D. | mode 3 |
| Answer» B. mode 1 | |
| 9. |
The operation that can be performed on control word register is |
| A. | read operation |
| B. | write operation |
| C. | read and write operations |
| D. | none |
| Answer» C. read and write operations | |
| 10. |
The number of counters that are present in the programmable timer device 8254 is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |