Lesson 1  The Switch
Lesson 2  Gates
Lesson 3  The Arithmetic Level
Lesson 4  Storage & Control

Objectives
 To describe how the circuits of a computer are constructed.
 To build and test a variety of circuits.
 To see how simple circuits, combined in complex ways, can implement a
model computer.
 To show the hierarchy of complexity of a computer; combining switches,
gates, and circuits to perform logical tasks.
