Question

Implement the following circuit to test the characteristics of a D flip flop. Note: Using a...

Implement the following circuit to test the characteristics of a D flip flop.

  • Note:
    • Using a clock input to operate the flip-flop is rather quickly.
    • You may wish to select the slow motion of the clock OR
      to use a simple binary input device instead of a clock input device.
    • Verify the flip flop state table.
    • Q(t+1) = D, is the characteristic equation. 
              Characteristic Table            Excitation Table
        ====================            ===================
        D  Q(t+1)  Operation            Q(t)  Q(t+1)   D
        ====================            ===================
        0    0     Reset                 0      0      0
        --------------------            -------------------
        1    1     Set                   0      1      1
        ====================            -------------------
                                         1      0      0
                                        -------------------
                                         1      1      1
                                        ===================
  • Questions:
    • Is a D flip-flop positive or negative edge triggered?________
    • What happens when the Set pin is set to one?__________
    • What happens when the Reset pin is set to one?_________
    • Does it matter what the D input is when either Set or Reset is one?_________
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Homework Answers

Answer #1

Q:- Is a D flip-flop positive or negative edge triggered?
Answer:------ Yes, D flip-flop is a positive or negative edge triggered.

Q:- What happens when the Set pin is set to one?
Answer:------
If the set pin alone is HIGH means Set pin is set to one (while the reset is LOW), this sets the Q pin to 1 and the Q pin to 0.

Q:- What happens when the Reset pin is set to one?
Answer:------
If the reset pin alone is HIGH means Reset pin is set to one (while the set pin is LOW), this resets the Q and Q pins both to 0.

Q:- Does it matter what the D input is when either Set or Reset is one?
Answer:------
Yes, it matters what the D input is when either Set or Reset is one.

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