Dead bug prototyping and freeform electronics are a way of building working electronic circuits, by soldering the parts directly together instead of using a printed circuit board. This clock is made entirely from discreet parts. Nothing but Diodes, resistors, transistors, and LEDs. There are no ICs, no crystal, no input other than 12v, or buttons to control it. There are nearly 2,000 part, all soldered together to make this circuit work.