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But the most important thing is that the previous LED's remain illuminated, so if the count is '9' then 9 LED's are lit up and if the count is '76', 76 LEDs are lit etc.
I plan to use 5mm LEDs. I like the aligator clip idea but my boss isn't the kind of guy to be happy with that. He wants to be able to push a button or flick a switch, aynthing else and he'll panic!
@ericgibbs....if I use your solution, what power supply will I need for the circuit/LEDs?? Sorry for the probably very obvious questions...
So its 5mm dia LED's, please state colour, voltage and operating current.?