Ted Mahler and Steve Marum, co founders of B.E.S.T. Robotics, created Squeaky.

The CPU is the part of PC that performs the arithmetic, logic & control functions.

A gate is a device implementing a Boolean function. 

Transistors are small electronic semiconductor device having at least three electrical contacts, used in a circuit as an amplifier or switch. Differnt transistors are And, Or, Not, and Nand.

A dowel represents a container holding a large number of transistors.

There are four integrated circuits. Multiplexers, adders, Decoders, and Latches.