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Home ‣ Digital Electronics ‣ The 8051 Microcontroller See What Others Are Saying!
- Question
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
- Correct Answer
- 00001000
- 1. The major blocks of the frequency counter are the counter, ________, decoder/display, and the timing and control unit.
Options- A. signal prescaler
- B. control inputs
- C. signal generator
- D. display register Discuss
- 2. Shift register counters use logic functions to reset the registers when the desired count is reached.
Options- A. True
- B. False Discuss
- 3. The software used to drive a microprocessor-based system is called FORTRAN.
Options- A. True
- B. False Discuss
- 4. The time delay called access time, tac, is a measure of the ROM's operating speed.
Options- A. True
- B. False Discuss
- 5. The 8051 has ________ 16-bit counter/timers.
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 6. The CPU (Central Processing Unit) is composed of memory and outputs.
Options- A. True
- B. False Discuss
- 7. Using separate serial inputs for shifting left or shifting right is a major difference between the 74194 and other shift registers.
Options- A. True
- B. False Discuss
- 8. The time interval on the leading edge of a pulse between 10% and 90% of the amplitude is the rise time.
Options- A. True
- B. False Discuss
- 9. In the keypad HDL encoder, the ts bit array represents a tristate buffer.
Options- A. True
- B. False Discuss
- 10. ________ is a mature technology consisting of numerous subfamilies that have been developed over many years of use.
Options- A. TTL
- B. CMOS
- C. ECL
- D. None of the above Discuss
More questions
Correct Answer: display register
Correct Answer: False
Correct Answer: False
Correct Answer: False
Correct Answer: 2
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: TTL
Comments
acromyday
com refers to as post- cycle therapy PCTElsevier Science Publishing Co
com refers to as post- cycle therapy PCTElsevier Science Publishing Co
enfossy
Each analysis was adjusted for the other factors except the variable of interest; for example, in comparing body weight across disease stage, we adjusted for the other factors, but not disease stageThe most common non MRSA ST groups, ST398 4163 and ST15 582, composed 14
Each analysis was adjusted for the other factors except the variable of interest; for example, in comparing body weight across disease stage, we adjusted for the other factors, but not disease stageThe most common non MRSA ST groups, ST398 4163 and ST15 582, composed 14
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