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Uploaded by Alu10000 on May 10, 2008
http://infoportal.it/modules/xpjirc/http://sites.google.com/site/aluscorner/This is a 4 digits up/down counter made around the Z80 uP. I've added a 32Kx8 RAM. The displays are driven with the multiplex technique implemented in the software.
Science & Technology
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