Subelement A: RADAR Principles – 10 Key Topics – 10 Exam Questions – 8 Drawings— Topic 10: Circuits-2
Question 8-10A6
Element 8 (RADAR)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?
Explanation
The component is a D-type Flip-Flop because its output (Q) latches the data input (D) on a clock edge, holding that state until the next active clock edge. It is "Inverting" because the Q output, when active and clocked, is the logical inverse of the D input.
The "3-State" characteristic indicates the presence of an additional control input (often an Output Enable or OE pin) that can place the output in a high-impedance (Hi-Z) state. This allows the component to effectively disconnect from a shared bus when not selected, preventing contention. The truth table (Fig. 8A8, which would display these specific behaviors) would show 'H' (High), 'L' (Low), and 'Z' (High-Impedance) states for the output.
Options B, C, and D are incorrect because:
* B) "Q-type" is not a standard flip-flop classification, and "Non-Inverting" contradicts the "Inverting" behavior that would be evident in the truth table.
* C) A "Shift Register" performs sequential data movement, which is a more complex function than a simple D-type flip-flop, and the terminology "Q-type" is still non-standard.
* D) "2-State" implies the output can only be High or Low, lacking the crucial Hi-Z state that defines a 3-state device.
Related Questions
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?8-10A5 The block diagram of a typical RADAR system microprocessor is shown in Fig. 8A2. Choose the most correct statement regarding this system.8-11B1 The magnetron is used to:8-11B2 The purpose of the modulator is to:8-11B3 Which of the following statements about most modern RADAR transmitter power supplies is false?