Arduino Offset printer page counter

My brother’s Offset printing machine was giving him trouble counting pages.┬áThere is voltage stabilizer connected to protect the machine from voltage beyond 110V. Whenever printer shut-off due to voltage fluctuation the counter of machine goes to zero again. This situation irritates him, as remembering pages is not easy while printing 1000-2000 pages at a time.

This picture shows four 7-segment displays connected that can show maximum number of 99999 pages. Continue reading