Key Topic 10: Circuits-2 Flashcards
8-10A1: In the circuit shown in Fig. 8A4, U5 pins 1 and 4 are hih and both are in the reset state. Assume one clock cycle occurs of Clk A followed by one cycle of Clk B. What are the output states of the two D-type flip flops?
A. Pin 5 low, Pin 9 low.
B. Pin 5 hih, Pin 9 low.
C. Pin 5 low, Pin 9 high.
D. Pin 5 hih, Pin 9 high.
D. Pin 5 hih, Pin 9 high.
8-10A2: If more light strikes the photodiode in Fig. 8A5, there will be:
A. Less diode current.
B. No chane in diode current.
C. More diode current.
D. There is wrong polarity on the diode.
C. More diode current.
8-10A3: In the circuit shown in Fig. 8A6, which of the followin is true?
A. With A and B hih, Q1 is saturated and Q2 is off.
B. With either A or B low, Q1 is saturated and Q2 is off.
C. With A and B low, Q2 is on and Q4 is off.
D. With either A or B low, Q1 is off and Q2 is on.
B. With either A or B low, Q1 is saturated and Q2 is off.
8-10A4: What is the correct value of Rs in Fig. 8A7, if the voltae across the LED is 1.9 volts with 5 volts applied and Ifmax equals 40 milliamps?
A. 4,700 ohms.
B. 155 ohms.
C. 77 ohms.
D. 10,000 ohms.
C. 77 ohms.
8-10A5: The block diaram of a typical RADAR system microprocessor is shown in Fig. 8A2. Choose the most correct statement reardin this system.
A. The ALU is used for address decoding.
B. General reisters are used for arithmetic manipulations.
C. The control unit executes arithmetic manipulations.
D. Address pointers are contained in the general resisters.
D. Address pointers are contained in the general resisters.
8-10A6: You are troubleshootin a component on a printed circuit board in a RADAR system while referencing the Truth Table in Fig. 8A8. What kind of interated circuit is the component?
A. D-type Flip-Flop, 3-State, Inverting.
B. Q-type Flip-Flop, Non-Inverting.
C. Q-type Directional Shift Reister, Dual.
D. D to Q Convertor, 2-State.
A. D-type Flip-Flop, 3-State, Inverting.
