Open book Open note Calculators allowed NO PHONES or TABLETS

Open book, Open note, Calculators allowed. NO PHONES or TABLETS If you encounter an issue or typo that prevents you from working the problem make an assumption that allows you to work the problem. WRITE DOWN YOUR ASSUMPTION! 1. We want to create an auto dialer for a phone system using a flip-flop based sequential circuit. If the phone number consists of 10 digits what is the minimum number of flip-flop needed to generate the sequence? For partial credit state why. 1. Fill out the state table for the following circuit.

Solution

A

B

X

Y

0

0

1

0

0

0

0

1

1

1

0

0

1

1

0

1

A	B	X	Y
0	0	1	0
0	0	0	1
1	1	0	0
1	1	0	1