DE: Unit 4 State Machines

Front

What is a state machine?

Back

A synchronous sequential circuit.

Front

Which of the following is an example of a device controlled by a state machine? Toaster, Microwave oven, Television, Traffic lights

Back

Traffic lights

Front

What is the first step in the state machine design process?

Back

Create State Graph

Front

How many flip-flops are needed for a state machine with four states?

Back

2

Front

What is the purpose of a state graph in state machine design?

Back

To show the sequence of states

Front

What are state variables in a state machine?

Back

Outputs of memory flip-flops

Front

What is the purpose of a state transition table?

Back

To describe the present state and the next state

Front

What are the design equations used for in state machine design?

Back

To simplify the design process

Front

In the state machine design example, what is the purpose of the Enable pushbutton?

Back

To hold the last number until pressed again

Front

What is the purpose of the Clock in a state machine?

Back

To control the speed of the state transitions