RADAR Principles
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?
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Pin 5 low, Pin 9 low.
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Pin 5 high, Pin 9 low.
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Pin 5 low, Pin 9 high.
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Correct AnswerPin 5 high, Pin 9 high.
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If more light strikes the photodiode in Fig. 8A5, there will be:
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Less diode current.
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No change in diode current.
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Correct AnswerMore diode current.
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There is wrong polarity on the diode.
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In the circuit shown in Fig. 8A6, which of the following is true?
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With A and B high, Q1 is saturated and Q2 is off.
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Correct AnswerWith either A or B low, Q1 is saturated and Q2 is off.
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With A and B low, Q2 is on and Q4 is off.
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With either A or B low, Q1 is off and Q2 is on.
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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?
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4,700 ohms.
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155 ohms.
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Correct Answer77 ohms.
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10,000 ohms.
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The block diagram of a typical RADAR system microprocessor is shown in Fig. 8A2. Choose the most correct statement regarding this system.
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The ALU is used for address decoding.
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General registers are used for arithmetic manipulations.
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The control unit executes arithmetic manipulations.
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Correct AnswerAddress pointers are contained in the general registers.
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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?
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Correct AnswerD-type Flip-Flop, 3-State, Inverting.
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Q-type Flip-Flop, Non-Inverting.
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Q-type Directional Shift Register, Dual.
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D to Q Convertor, 2-State.
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