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Home ‣ Digital Electronics ‣ Combinational Logic Circuits See What Others Are Saying!
- Question
Occasionally, a particular logic expression will be of no consequence in the operation of a circuit, such as in a BCD-to-decimal converter. These result in ________ terms in the K-map and can be treated as either ________ or ________, in order to ________ the resulting term.
Options- A. don't care, 1's, 0's, simplify
- B. spurious, AND's, OR's, eliminate
- C. duplicate, 1's, 0's, verify
- D. spurious, 1's, 0's, simplify
- Correct Answer
- don't care, 1's, 0's, simplify
- 1. If both inputs of a 2-input NOR gate are connected, the gate will function as an ________.
Options- A. OR gate
- B. AND gate
- C. inverter
- D. any of the above Discuss
- 2. Temperature variation is normally an analog quantity.
Options- A. True
- B. False Discuss
- 3. What is the resolution, in percent, of a 12-bit DAC?
Options- A. 8.33
- B. 0.049
- C. 0.000488
- D. 0.083 Discuss
- 4. This program code will be executed once:
STAT: MOV A, #01H JNZ STAT
Options- A. True
- B. False Discuss
- 5. Which of the following commands will copy the contents of location 4H to the accumulator?
Options- A. MOV A, 04H
- B. MOV A, L4
- C. MOV L4, A
- D. MOV 04H, A Discuss
- 6. The following program will cause the 8051 to be stuck in a loop:
LOOP: MOV A, #00H JNZ LOOP
Options- A. True
- B. False Discuss
- 7. MOV A, @ R1 will:
Options- A. copy R1 to the accumulator
- B. copy the accumulator to R1
- C. copy the contents of memory whose address is in R1 to the accumulator
- D. copy the accumulator to the contents of memory whose address is in R1 Discuss
- 8. The last 96 locations in the internal data memory are reserved for general-purpose data storage and stack.
Options- A. True
- B. False Discuss
- 9. The contents of the accumulator after this operation
MOV A,#2BH
ORL A,00H
will be:
Options- A. 1B H
- B. 2B H
- C. 3B H
- D. 4B H Discuss
- 10. The special function registers are maintained in the next 128 locations after the general-purpose data storage and stack.
Options- A. True
- B. False Discuss
More questions
Correct Answer: inverter
Correct Answer: True
Correct Answer: 0.049
Correct Answer: False
Correct Answer: MOV A, 04H
Correct Answer: False
Correct Answer: copy the contents of memory whose address is in R1 to the accumulator
Correct Answer: False
Correct Answer: 2B H
Correct Answer: True
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