Asynchronous sequential circuits in digital system design

What is a stable state in asynchronous sequential circuits?

• A stable state is a state where the outputs are unpredictable.

• A stable state is a state where the outputs remain constant regardless of the input changes.

• A stable state is a state where the outputs remain constant only if the input changes.

• A stable state is a state where the outputs change constantly with input changes.

What is an unstable state in asynchronous sequential circuits?

• When the outputs change only occasionally

• When the outputs are constantly changing due to rapid input changes.

• When the circuit is not affected by input changes

• When the outputs remain constant despite input changes

What are cycles in asynchronous sequential circuits?

• The time it takes for the circuit to complete a full sequence of operations.

• The color-coding of the circuit components.

• The temperature at which the circuit operates.

• The number of input and output signals in the circuit.

What are races in asynchronous sequential circuits?

• Stable output due to synchronized inputs

• Unpredictable behavior due to relative arrival times of inputs

• Consistent behavior regardless of input timing

• No impact on circuit performance

What are hazards in asynchronous sequential circuits?

• Synchronous operation and clear timing

• Predictable outcomes and stable conditions

• Consistent behavior and no race conditions

• Unexpected behavior or race conditions

What are essential hazards in asynchronous sequential circuits?

• Output changes after input stabilizes

• Input changes after output stabilizes

• No hazards in asynchronous circuits

• Output changes before input stabilizes

What is a fundamental mode sequential circuit?

• A type of sequential circuit that changes state continuously

• A type of sequential circuit where the state changes only at specific clock pulses.

• A type of sequential circuit that only uses combinational logic

• A type of sequential circuit that operates without a clock signal

What is a pulse mode sequential circuit?

• A type of sequential circuit where the state changes only on the active edge of the clock signal.

• A type of sequential circuit where the state changes continuously

• A type of sequential circuit where the state changes on every clock signal

• A type of sequential circuit where the state changes randomly

How do you design hazard-free circuits in digital system design?

• By adding more hazards

• By ignoring hazards completely

• By using techniques such as hazard detection and hazard removal

• By using outdated circuit design techniques

What are the key considerations for designing hazard-free circuits?

• Using outdated components

• Ignoring safety standards

• Skipping testing

• Proper timing, component selection, and testing