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YS
Nobel Prize Winner
    
USA
1132 Posts |
Posted - Feb 05 2003 : 11:19:34 AM
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Please look at http://www.intersil.com/data/fn/fn3082.pdf
This is famous one-chip voltmeter. The cost is about $6. Plus 3 or 4 7-segment LEDs -another $6, plus other parts.Costwise, just buy a cheap digital multimeter ($15 from Radio Shack) and light it up with a couple of regular LEDs.
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