8-A-10: Circuits-2
8-10A1:
In the circuit shown in Fig. 8A4, U5 pins 1 and 4 are high 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?
Pin 5 high, Pin 9 high.
Pin 5 low, Pin 9 low.
Pin 5 high, Pin 9 low.
Pin 5 low, Pin 9 high.
8-10A2:
If more light strikes the photodiode in Fig. 8A5, there will be:
More diode current.
Less diode current.
No change in diode current.
There is wrong polarity on the diode.
8-10A3:
In the circuit shown in Fig. 8A6, which of the following is true?
With either A or B low, Q1 is saturated and Q2 is off.
With A and B high, Q1 is saturated and Q2 is off.
With A and B low, Q2 is on and Q4 is off.
With either A or B low, Q1 is off and Q2 is on.
8-10A4:
What is the correct value of RS in Fig. 8A7, if the voltage across the LED is 1.9 Volts with 5 Volts applied and If max equals 40 milliamps?
77 ohms.
4,700 ohms.
155 ohms.
10,000 ohms.
8-10A5:
The block diagram of a typical RADAR system microprocessor is shown in Fig. 8A2. Choose the most correct statement regarding this system.
Address pointers are contained in the general registers.
The ALU is used for address decoding.
General registers are used for arithmetic manipulations.
The control unit executes arithmetic manipulations.
8-10A6:
You are troubleshooting a component on a printed circuit board in a RADAR system while referencing the Truth Table in Fig. 8A8. What kind of integrated circuit is the component?
D-type Flip-Flop, 3-State, Inverting.
Q-type Flip-Flop, Non-Inverting.
Q-type Directional Shift Register, Dual.
D to Q Convertor, 2-State.
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● = Incorrect answer
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