Synchronous Sequential Logic Quiz

Which of the following describes a flip-flop?

• A binary storage device for one bit

• A signal generator

• A device that performs addition

• A type of combinational logic

What is the role of the clock generator in synchronous sequential circuits?

• To perform logical operations

• To synchronize the storage elements

• To store data

• To provide power to the circuit

In a D-flip-flop, what happens when D=1?

• Q=0

• Q=1

• Q is undefined

• Q remains unchanged

What is the output of a JK flip-flop when both J and K are set to 1?

• Output is reset to 0

• Output remains unchanged

• Output is set to 1

• Output is complemented

Which type of flip-flop changes its output at the negative edge of the clock?

• D flip-flop

• Positive-edge-triggered flip-flop

• Negative-edge-triggered flip-flop

• JK flip-flop

What is the characteristic equation for a T flip-flop when T=1?

• Q(t+1) = Q(t) AND T

• Q(t+1) = Q(t) XOR T

• Q(t+1) = Q'(t)

• Q(t+1) = Q(t)

What does the state table represent in a sequential circuit?

• The logic gates used in the circuit

• The physical layout of the circuit

• The relationship between present state, input, next state, and output

• The timing diagram of the circuit

In a state diagram, how are states represented?

• By rectangles

• By squares

• By triangles

• By circles

Which of the following is true about the outputs of combinational logic?

• They are always binary

• They are always stored in memory

• They depend only on present input values

• They depend on past states

What is the main advantage of using edge-triggered flip-flops?

• They are more reliable

• They require fewer gates

• They are simpler to design

• They change state on every clock pulse