3. From Transistors to Logic Circuits 3.1 How a Circuit Represents 0 and 13.2 The Transistor, a Switch Driven by Voltage3.3 MOSFET: The Transistor Inside a Tiny Chip3.4 The Agreement That Links Voltage and Computation3.5 Basic Logic Circuits Built from Transistors ←2.4 Following a Computer’s Operation Through Tetris3.1 How a Circuit Represents 0 and 1→