CPU - Transistor

The transistor is a device that that enable automatic switching of electrical signals. It was invented by William Shockley, John Bardeen and Walter Brattain and started the whole computer industry.

A transistor is a resistor whose values can vary based transistor on an input voltage value.

The electrical signal switch off and on is based on the voltage level:

• At 0 volt, no current can pass through a transistor - light bulb off
• at +3.5 v, current can flow through a transistor - light bulb on

Bit are implemented with transistor where:

• the value 0 is the voltage 0
• the value 1 is a voltage +3.5 v