In this lesson, students build two circuits and explore how transistors function. When Bell Labs introduced the transistor in June of 1948, a spokesman proudly announced "This cylindrical object ...

Instead, they should have an adjustable top value and a separately adjustable bottom value: 5V and 0V, for example. The other day, I thought of a way to modify a conventional ‘diamond buffer’ (circuit ...

The two-transistor circuit offers the additional benefit of acting as a level translator between two logic levels. This example shows a buffer-Advertisement. translation between a 3.3V system and a 5V ...

It doesn't have to be much more, though: 20 bits of dumb, printed memory is one thing -- it's an NFC/RFID tag, basically -- but to be able to print transistor-transistor logic is another thing ...