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Hello Hans.. Did I lose you?

Hans.. I sent you a PM.

Dave..

Yes, I have downloaded the file. Thanks. I'm having trouble understanding the symbols. I really only need a 15 bit capacity which may simplify the circuit. My first introduction to logic circuitry was over 50 years ago when I was employed by Lockheed Martin. at Cape Canaveral, Florida. There I ...

Hi Hans..

Your suggestion of using registers of parallel to serial and then back to parallel is exactly what I would like to do. I tried to open your circuit attachment but was unable to. Can you resend with different file type? Thanks for your help.

Dave..

Thanks for the info. I was hoping to use the 74xxx flip flop to drive the Led's instead of adding a transistor driver to do it. Also it would be nice to have a multiplex scheme where all inputs could be inserted into a serial wave train then demuxed at the remote location to display on a panel ...

Hi..I'm new to the forum and have been in electronics and communications for many years but have not kept up with the latest in logic circuitry. I want to monitor, real-time, the opening and close of any door or window in a large metal building, twelve total, from an adjacent nearby office in ...