Hi A while back, I had to come up with a clock system that would work with a simple clock chip that only went up to months but not years. The machine did have some other non-volitile memory so here is how I delt with it. I had what I called a half year counter. If when the machine turned on, the clock chip thought it was in early half of the year and the RAM said it was in the last half, I'd update the year and reset the bit. The only requirement here was that the machine had to be turned on at least once every 6 months or soemone had to reset the time. Why they couldn't have done something as simple as this for the century, I don't know. Dwight