Classification of Sequential Circuits

Types of Sequential Circuits

• Synchronous Sequential Circuits: Use a clock signal to synchronize state changes.
• Asynchronous Sequential Circuits: Do not use a clock signal; state changes occur in response to input changes.

Synchronous Sequential Circuits

• Characteristics: Use a clock signal, state changes occur at specific times.
• Examples: Flip-flops, counters, registers.

Asynchronous Sequential Circuits

• Characteristics: No clock signal, state changes occur in response to input changes.
• Examples: Asynchronous counters, ripple counters.

Diagram

Key Differences

• Clock Signal: Synchronous sequential circuits use a clock signal, while asynchronous sequential circuits do not.
• State Changes: Synchronous sequential circuits change state at specific times, while asynchronous sequential circuits change state in response to input changes.