ECS154A Homework #3

• All parts of the homework due by 4:30 PM on Tuesday, November 4th
  NOTE - no late days on this assignment. No homeworks will be accepted after the deadline.

Assignment (Written):

1. Do Problem 7.6 in the book
2. Do Problem 7.8 in the book
3. Do Problem 8.2 in the book (use T instead of JK FF's)
4. Do Problem 8.5 in the book, detecting 011 or 010 patterns
5. Do Problem 8.6 in the book, detecting 011 or 010 patterns
6. Do Problem 8.11 in the book, detecting 0110 or 1101 patterns
7. Do Problem 8.12 in the book, with p=1 if the number of 1's is even

Assignment (MaxPlus):

1. Do Problem 8.24 in the book, only make it a modulo-5 counter.

2. Consider a coin-operated vending machine. Assume that the
   machine accepts only quarters, dimes, and nickels. Coins are inserted 
   until a total of 20 cents or more is deposited. Only 
   one coin is deposited at a time. The output signal z1=1 should indicate 
   that merchandise should be provided; z1=0 indicates no merchandise.
   
   Coincident with the last coin input, the (change) outputs are to be set.
   Assume the machine can give a dime (z2=1) and/or a nickel (z3=1).
   Use the binary outputs z2 and z3 to represent the 4 distinct possibilities
   (No change, 1 nickel, 1 dime, 1 nickel and 1 dime.)  If a customer does
   something unwise, like puts in a dime and a nickel followed by a quarter, 
   correct change does not have to be provided (but the maximum amount change 
   does.)
   
   Design the circuit in Maxplus.