MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Avr Microcontroller knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will happen if the two keys of the keyboard are pressed at a time? |
| A. | both the keys will be displayed on the screen |
| B. | the key which is being actually pressed(for more then 20microseconds) will be displayed |
| C. | the key that is pressed first will be displayed |
| D. | none of the mentioned |
| Answer» C. the key that is pressed first will be displayed | |
| 2. |
If the pins of the keyboard are used as an interrupt, then these pins will cause an interrupt of what type? |
| A. | External hardware interrupt |
| B. | Timer interrupt |
| C. | TI/RI interrupt |
| D. | None of the mentioned |
| Answer» B. Timer interrupt | |
| 3. |
What is described by the following command? KCODE0<<1 |
| A. | load KCODE0 with 0 |
| B. | rotate the contents of the KCODE0 register to the right |
| C. | rotate the contents of the KCODE0 register to the left |
| D. | none of the mentioned |
| Answer» C. rotate the contents of the KCODE0 register to the left | |
| 4. |
In reading the columns of a keyboard matrix, when no key is pressed then all the pins show? |
| A. | 0 |
| B. | 1 |
| C. | F |
| D. | 7 |
| Answer» C. F | |