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Digital Logic Design Quiz

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Questions and Answers

What is the primary difference between combinational and sequential logic?

Combinational logic depends only on inputs, while sequential logic depends on both present inputs and past behavior (correct)

Combinational logic depends on past behavior, while sequential logic depends only on present inputs

Combinational logic has memory, while sequential logic does not

Sequential logic has memory, while combinational logic does not

What is the characteristic of a sequential circuit that allows it to have 'memory'?

The circuit operates at a high clock frequency

The outputs depend only on the present inputs

The outputs depend on the present inputs and the past behavior of the circuit (correct)

The circuit has a large storage capacity

What is an example of a sequential logic circuit mentioned in the text?

Decoder

Counter (correct)

Multiplexer

Adder

What is the function of a latch in digital logic design?

Temporary storage of a value, even when the input changes (B) Signup and view all the answers

What does it mean for a circuit to have 'memory'?

The new output depends on the previous output and the present inputs (B) Signup and view all the answers

What is the primary characteristic of a sequential logic circuit?

It depends on present inputs and past behavior (D) Signup and view all the answers

What is the main function of a latch in digital logic design?

Temporary storage of a value (D) Signup and view all the answers

How does the output of a counter in a sequential logic circuit change when the input is 1?

It increases by 1 (B) Signup and view all the answers

What distinguishes a latch from a flip-flop in digital logic design?

Latches are level-sensitive, while flip-flops are edge-triggered (C) Signup and view all the answers

What is the significance of a sequential logic circuit having 'memory'?

It can retain past input information (A) Signup and view all the answers