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Old 05-27-2007, 10:32 PM
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allenring allenring is offline
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Join Date: Jan 2007
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here are some additional details

Quite a difference of opinion so far. To provide more info based on ahirschman's input. My lighting is done with LEDs, should be good for 100,000 hours. The power supply is over designed, 5V, 20 Amp switching supply, it is just coasting. The electronics are 70's era technology, Individual DIPs mounted in sockets and wire wrapped. I'm using 4518 BCD up down counters, I like CMOS over TTL. The LED segments, which are fairly power hungry are driven by discrete transistors.

The logic is not very complicated and could be independently reproduced, especially by looking at the chip set I have chosen to use.
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