The frequency of the signal at the output of the D flip flop is 5 KHz. The frequency of the signal at the clock of the rising edge triggered D flip flop is

F1 Shubham Madhu 27.07.21 D5

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  1. 5 KHz
  2. 2.5 KHz
  3. 10 KHz
  4. 20 KHz

Answer (Detailed Solution Below)

Option 3 : 10 KHz
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Concept:

 

F1 Shubham Madhu 27.07.21 D5

When Q = 0 and Q̅ = 1, D = 1

After clock pulse application, Y = 1

Now, when Q = 1 and Q̅ = 0, D = 0

After clock pulse, Y = 0

Hence, it is also a MOD-2 circuit and will act as a frequency divider circuit with:

\({f_{out}} = \frac{{{f_{in}}}}{2}\)

Calculation:

Given:

fout = 5 kHz

⇒ fin = 2 × fout = 2 × 5 = 10 kHz

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