Discussion
Home ‣ Digital Electronics ‣ The 8051 Microcontroller Comments
- Question
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
- Correct Answer
- True
- 1. 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
- 2. A HIGH on which pin resets the 8051 microcontroller?
Options- A. RESET
- B. RST
- C. PSEN
- D. RSET Discuss
- 3. This program code will be executed continuously:
STAT: MOV A, #01H JNZ STAT
Options- A. True
- B. False Discuss
- 4. Data transfer from I/O to external data memory can only be done with the MOVX command.
Options- A. True
- B. False Discuss
- 5. The statement LCALL READ passes control to the line labelled READ.
Options- A. True
- B. False Discuss
- 6. A label is used to name a single line of code.
Options- A. True
- B. False Discuss
- 7. 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
- 8. The binary number for octal 458 is ________.
Options- A. 100010
- B. 100101
- C. 110101
- D. 100100 Discuss
- 9. Convert the following BCD number to decimal.
100000000011bcd
Options- A. 8003
- B. 803
- C. 1003
- D. 103 Discuss
- 10. Convert 45710 to hexadecimal.
Options- A. 711
- B. 2C7
- C. 811
- D. 1C9 Discuss
The 8051 Microcontroller problems
Search Results
Correct Answer:
Correct Answer: RST
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: MOV A, R3
Correct Answer: 100101
Correct Answer: 803
Correct Answer: 1C9
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