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Home ‣ Digital Electronics ‣ Combinational Logic Circuits See What Others Are Saying!
- Question
For the device shown here, let all D inputs be LOW, both S inputs be HIGH, and the
input be LOW. What is the status of the Y output? 
Options- A. LOW
- B. HIGH
- C. Don't Care
- D. Cannot be determined
- Correct Answer
- LOW
- 1. An EPM 7128S in a ________ PQFP package has 12 I/O per LAB plus 4 additional input-only pins for a total of 100 pins.
Options- A. 100-pin
- B. 120-pin
- C. 140-pin
- D. 160-pin Discuss
- 2. Assume you want to determine the timing diagram for a 4-bit counter using an oscilloscope. The best choice for an oscilloscope trigger signal is ________.
Options- A. the most significant bit (MSB)
- B. the least significant bit (LSB)
- C. the clock signal
- D. from a composite of the MSB and LSB Discuss
- 3. The J-K flip-flop is a standard building block of clocked (sequential) logic circuits known as a ________.
Options- A. FUNCTION
- B. logic primitive
- C. VARIABLE
- D. PROCESS Discuss
- 4. A flip-flop's normal starting state when power is first applied to a circuit is always the SET state.
Options- A. True
- B. False Discuss
- 5. How many exclusive-NOR gates would be required for an 8-bit comparator circuit?
Options- A. 4
- B. 6
- C. 8
- D. 10 Discuss
- 6. A circuit that converts some binary code into a singular active output representing its numerical value is a comparator.
Options- A. True
- B. False Discuss
- 7. In DRAM operations, it is assumed that R/W is in its ________ state during a ________ operation.
Options- A. HIGH, read
- B. Hi-Z, write
- C. HIGH, write
- D. Hi-Z, read Discuss
- 8. Convert the following decimal number to BCD.
127
Options- A. 011100100001
- B. 111010001
- C. 001010111
- D. 000100100111 Discuss
- 9. To determine which of two binary numbers is larger, you could use a(n) ________.
Options- A. register
- B. adder
- C. encoder
- D. magnitude comparator Discuss
- 10. One aspect of project planning and management is the selection of ________ that will best fit the application.
Options- A. hardware platform
- B. software
- C. personnel
- D. time Discuss
More questions
Correct Answer: 160-pin
Correct Answer: the clock signal
Correct Answer: logic primitive
Correct Answer: False
Correct Answer: 8
Correct Answer: False
Correct Answer: HIGH, read
Correct Answer: 000100100111
Correct Answer: magnitude comparator
Correct Answer: hardware platform
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