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- Question
What type of circuit is shown below, and how is the output ordinarily connected?
Options- A. It is an open-collector gate and is used to drive loads that cannot be connected directly to Vcc due to high noise levels.
- B. It represents an active-LOW inverter and is used in negative logic systems.
- C. It is an open-collector gate. An external load must be connected between the output terminal and an appropriate supply voltage.
- D. Any of the above could be correct, depending on the specific application involved.
- Correct Answer
- It is an open-collector gate. An external load must be connected between the output terminal and an appropriate supply voltage.
- 1. In a MAX7000S device, when an I/O pin is configured as an input, the associated macrocell can be used for ________.
Options- A. buried logic
- B. another output
- C. extra speed
- D. in-system testing Discuss
- 2. A half-adder circuit would normally be used each time a carry input is required in an added circuit.
Options- A. True
- B. False Discuss
- 3. A very important attribute of the conditional signal assignment statement is its sequential operation.
Options- A. True
- B. False Discuss
- 4. In general, when using a scope to troubleshoot digital systems the instrument should be triggered by ________.
Options- A. the A channel or channel 1
- B. the vertical input mode, when using more than one channel
- C. the system clock
- D. line sync, in order to observe troublesome power line glitches Discuss
- 5. Incandescent 7-segment displays are especially well suited for use in portable battery-operated devices.
Options- A. True
- B. False Discuss
- 6. In BCD addition, the value ________ is added to any invalid code group.
Options- A. 010101
- B. 0U812
- C. 100110
- D. 0110 Discuss
- 7. In the 74121, which is nonretriggerable, any triggers that come in before the end of the timing cycle are ignored.
Options- A. True
- B. False Discuss
- 8. SPLDs, CPLDs, and FPGAs are all which type of device?
Options- A. PAL
- B. PLD
- C. EPROM
- D. SRAM Discuss
- 9. Gated S-R flip-flops are called asynchronous because the output responds immediately to input changes.
Options- A. True
- B. False Discuss
- 10. A ROM that allows the user to program data into the chip by permanently opening fusible links is the EPROM.
Options- A. True
- B. False Discuss
More questions
Correct Answer: buried logic
Correct Answer: False
Correct Answer: True
Correct Answer: the system clock
Correct Answer: False
Correct Answer: 0110
Correct Answer: True
Correct Answer: PLD
Correct Answer: False
Correct Answer: False
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