# Homeworks #5 and #6 and another quiz warning

## Postponing of due date for homework #4

Homework #5 is now due on 8 March.

## Homework #5 -- Due 22 March

Do the following problems from Chapter 4 (pp. 119-122)

- Problem 4-2.
- Problem 4-10.
- Problem 4-12(e).
- Problem 4-21.

## Homework #6 -- Due 29 March

This problem is to design a Nabs dispenser. Your machine has two
inputs, x and y, which encode the following information:

x y Meaning
0 0 nothing is happening
0 1 nickel inserted
0 1 dime inserted
1 1 Nabs button pushed

There is a single output, z. When z is 0, the machine produces
nothing. When z is 1, the machine outputs a packages of Nabs.

Assume that Nabs cost 15 cents. Nabs are returned only if the
Nabs button is pushed after 15 cents are deposited. Assume that
this %!@%$# machine returns no change and just keeps any money you
deposit over 15 cents.

Show how to implement that machine in a sequential circuit.
Enter your circuit into `diglog` to test it.

## Quiz -- 8 March

At the end of class on Tuesday, 8 March, there will be a brief
(30 minute) quiz on Chapters 2 and 3 of the textbook.