real time clock

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hi,

here's a modified version with trickle charge enabled for a supercap. Note this includes no LCD interface.

A schematic is included in this pdf http://www.parallax.com/dl/appnt/jav2/appnote2.pdf

Here's a datasheet for the supercap, I used the 0.47f component: http://rocky.digikey.com/WebLib/Coop...capacitors.pdf