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_FLAG_THAT_INCREMENTS_AUTOMATICALLY_AFTER_EACH_READ_OR_WRITE_OPERATION_TO_THE_DISPLAY_RAM_IS?$ |
| A. | IF |
| B. | RF |
| C. | AI |
| D. | WF |
| Answer» D. WF | |
| 2. |
If_any_change_in_sensor_value_is_detected_at_the_end_of_a_sensor_matrix_scan,_then_the_IRQ_line$ |
| A. | goes low |
| B. | goes high |
| C. | remains unchanged |
| D. | none |
| Answer» C. remains unchanged | |
| 3. |
The FIFO status word is used to indicate the error i? |
| A. | keyboard mode |
| B. | strobed input mode |
| C. | keyboard and strobed input mode |
| D. | scanned sensor matrix mode |
| Answer» D. scanned sensor matrix mode | |
| 4. |
The data that is entered from the left side of the display unit is of |
| A. | left entry mode |
| B. | right entry mode |
| C. | left and right entry modes |
| D. | none |
| Answer» B. right entry mode | |
| 5. |
When a key is pressed, the debounce circuit waits for 2 keyboard scans and then checks whether the key is still depressed in |
| A. | scanned keyboard special error mode |
| B. | scanned keyboard with N-key rollover |
| C. | scanned keyboard mode with 2 key lockout |
| D. | sensor matrix mode |
| Answer» C. scanned keyboard mode with 2 key lockout | |
| 6. |
The mode that is programmed using “end interrupt/error mode set command” is$ |
| A. | scanned keyboard special error mode |
| B. | scanned keyboard with N-key rollover |
| C. | scanned keyboard mode with 2 key lockout |
| D. | sensor matrix mode |
| Answer» B. scanned keyboard with N-key rollover | |
| 7. |
When a key is pressed, a debounce logic comes into operation in |
| A. | scanned keyboard special error mode |
| B. | scanned keyboard with N-key rollover |
| C. | scanned keyboard mode with 2 key lockout |
| D. | sensor matrix mode |
| Answer» D. sensor matrix mode | |
| 8. |
The registers that hold the address of the word currently being written by the CPU from the display RAM are |
| A. | control and timing register |
| B. | control and timing register and timing control |
| C. | display RAM |
| D. | display address registers |
| Answer» E. | |
| 9. |
The sensor RAM acts as 8-byte first-in-first-out RAM in |
| A. | keyboard mode |
| B. | strobed input mode |
| C. | keyboard and strobed input mode |
| D. | scanned sensor matrix mode |
| Answer» D. scanned sensor matrix mode | |
| 10. |
The registers that store the keyboard and display modes and operations programmed by CPU are |
| A. | I/O control and data buffers |
| B. | Control and timing registers |
| C. | Return buffers |
| D. | Display address registers |
| Answer» C. Return buffers | |