Discussion
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- Question
What is the difference between the 8031 and the 8051?
Options- A. The 8031 has no interrupts.
- B. The 8031 is ROM-less.
- C. The 8051 is ROM-less.
- D. The 8051 has 64 bytes more memory.
- Correct Answer
- The 8031 is ROM-less.
- 1. The total external data memory that can be interfaced to the 8051 is:
Options- A. 32K
- B. 64K
- C. 128K
- D. 256K Discuss
- 2. The 8051 has ________ 16-bit counter/timers.
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 3. An alternate function of port pin P3.4 in the 8051 is:
Options- A. Timer 0
- B. Timer 1
- C. interrupt 0
- D. interrupt 1 Discuss
- 4. Microcontrollers often have:
Options- A. CPUs
- B. RAM
- C. ROM
- D. all of the above Discuss
- 5. Both registers TL0 and TL1 are needed to start Timer 0.
Options- A. True
- B. False Discuss
- 6. Which of the following commands will move the value at port 3 to register 2?
Options- A. MOV P2, R3
- B. MOV R3, P2
- C. MOV 3P, R2
- D. MOV R2, P3 Discuss
- 7. The number of data registers is:
Options- A. 8
- B. 16
- C. 32
- D. 64 Discuss
- 8. The following program will receive data from port 1, determine whether bit 2 is high, and then send the number FFH to port 3:
READ: MOV A,P1
ANL A,#2H
CJNE A,#02H,READ
MOV P3,#FFH
Options- A. True
- B. False Discuss
- 9. The contents of the accumulator after this operation
MOV A,#0BH
ANL A,#2CH
will be
Options- A. 11010111
- B. 11011010
- C. 00001000
- D. 00101000 Discuss
- 10. The last 96 locations in the internal data memory are reserved for general-purpose data storage and stack.
Options- A. True
- B. False Discuss
The 8051 Microcontroller problems
Search Results
Correct Answer: 64K
Correct Answer: 2
Correct Answer: Timer 0
Correct Answer: all of the above
Correct Answer: False
Correct Answer: MOV R2, P3
Correct Answer: 32
Correct Answer: True
Correct Answer: 00001000
Correct Answer: False
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