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- Question
A HIGH on which pin resets the 8051 microcontroller?
Options- A. RESET
- B. RST
- C. PSEN
- D. RSET
- Correct Answer
- RST
- 1. This program code will be executed continuously:
STAT: MOV A, #01H JNZ STAT
Options- A. True
- B. False Discuss
- 2. Data transfer from I/O to external data memory can only be done with the MOVX command.
Options- A. True
- B. False Discuss
- 3. The statement LCALL READ passes control to the line labelled READ.
Options- A. True
- B. False Discuss
- 4. Which of the following instructions will move the contents of the accumulator to register 6?
Options- A. MOV 6R, A
- B. MOV R6, A
- C. MOV A, 6R
- D. MOV A, R6 Discuss
- 5. Which of the following statements will add the accumulator and register 3?
Options- A. ADD @R3, @A
- B. ADD @A, R3
- C. ADD R3, A
- D. ADD A, R3 Discuss
- 6. The start-conversion on the ADC0804 is done by using the:
Options- A.
- B. CS line
- C. INTR line
- D. V ref/2 line Discuss
- 7. The address space of the 8051 is divided into four distinct areas: internal data, external data, internal code, and external code.
Options- A. True
- B. False Discuss
- 8. A label is used to name a single line of code.
Options- A. True
- B. False Discuss
- 9. Which of the following instructions will move the contents of register 3 to the accumulator?
Options- A. MOV 3R, A
- B. MOV R3, A
- C. MOV A, R3
- D. MOV A, 3R Discuss
- 10. The binary number for octal 458 is ________.
Options- A. 100010
- B. 100101
- C. 110101
- D. 100100 Discuss
The 8051 Microcontroller problems
Search Results
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: MOV R6, A
Correct Answer: ADD A, R3
Correct Answer:
Correct Answer: True
Correct Answer: True
Correct Answer: MOV A, R3
Correct Answer: 100101
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