We can see how circuits work, and represent them with some simple diagrams, using basic electrical components like these. You start with a cell, or combination of cells. These could be batteries ...

We can see how circuits work, and represent them with some simple diagrams, using basic electrical components like these. You start with a cell, or combination of cells. These could be batteries ...

When Bell Labs introduced the transistor in June of 1948, a spokesman proudly announced "This cylindrical object . . . can amplify electrical ... to build two simple transistor circuits, each ...