Digital Counter Properties Explained

This solution evaluates the given statements about digital counters to determine their accuracy.

Statement Analysis

• Statement A: "Design of synchronous counter is difficult as compared to asynchronous counter."
  • This is true. Synchronous counters require more complex logic circuitry because all flip-flops are driven by a common clock signal, necessitating careful design for simultaneous state changes. Asynchronous counters are simpler as flip-flops trigger sequentially.
• Statement B: "Digital counter are used for counting the pulses/events."
  • This is true. The fundamental purpose of digital counters is to count discrete events or input pulses.
• Statement C: "Counter are the combination circuits."
  • This is false. Counters contain memory elements (flip-flops) that store the current state. Circuits with memory are classified as sequential circuits, not combinational circuits (whose outputs depend only on current inputs).
• Statement D: "In Asynchronous counter, the same clock pulse can be applied to all the flip-flops."
  • This is false. Applying the same clock pulse to all flip-flops simultaneously is characteristic of a synchronous counter. In asynchronous (ripple) counters, only the first flip-flop receives the external clock signal, while subsequent flip-flops are triggered by the output of the preceding one.

Conclusion on Counter Statements

Based on the analysis, statements A and B are accurate descriptions of digital counters and their design principles.