This is a DIY kit for a 4 digit 7-segment LED up/down counter using an Atmel 90S1200. This counter accepts reset, up, down, disable, and provides overflow to a second counter for cascading. Operates from 9..15 Volt.
Kitrus, the manufacturer of the DIY kits, has created an internet message board for their products. Communicate with other users, and pose your questions directly to the Kitsrus techies!