A bioelectronic engineer, Klas Tybrandt of Linkoping University in Sweden, has built the first "ion transistor" computer chip, which uses chemical ions and biological molecules as charge carriers ...
Sometimes, the parts list says it all. 777 transistors, 1223 resistors, 136 LEDs, 455 crimp connectors, 41 protoboards and 500 grams of solder. That’s what went into this transistor logic clock build.