Neon bulb logic

[Mike ODELL]

the design is quite refreshing - it's not the same old 7400 "binary inside" approach.
Eg, his decade counters count to 10 in decimal, not decoded binary.
And the logic is pulse-based, not level-based, so it's self-clocking and asynchronous.
Very cool indeed.

     - mo



Sent from my iPad so please excuse the jammy fingers.

> On Sep 29, 2014, at 11:21 AM, Andre Kesteloot <akesteloot at gmail.com> wrote:
> 
> amazing patience on the part of the designer/builder !
> Utwente is an excellent college in Holland.
> 
> Thanks 
> André
> 
>> On Mon, Sep 29, 2014 at 10:56 AM, Karl W4KRL <W4KRL at arrl.net> wrote:
>> I tried to build a neon bulb flip-flop when I was a kid and failed. This guy built an entire clock using neon bulbs:
>> 
>> http://bit.ly/1CALrFr
>> 
>> http://wwwhome.cs.utwente.nl/~ptdeboer/ham/neonclock/
>> 
>> He has an annotated schematic at: 
>> http://wwwhome.cs.utwente.nl/~ptdeboer/ham/neonclock/neonclock_circuitdiagram.pdf
>> 
>> 
>> 73 Karl W4KRL
>> 
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