Modular Synth Panels

I labeled the inputs as A and B and the outputs of my Quad Logic Gates 
as A+B.  I meant the + symbol to be generic, knowing that I might change 
the chip, which indeed I did.

http://pugix.com/synth/catgirl-synth-pulse-divider/

I recommend using an I.C. socket for the logic chip, so that you can try 
different ones.  My favorite is the CD4077, XNOR.  I use it often as a 
pulse inverter (mine go +/-5V) with just the A input and the A+B 
output.  It does digital ring modulation using both inputs.

Remember, all four gates use the same logic.  You would need multiple 
Quad Logic Gate boards to have a selection of different logic.  Still, 
you can combine logic using the quad.  For instance, if you patch an 
XNOR out to the A input of a second XNOR, the second's output is XOR of 
the first's inputs.

Richard Brewster

David Moylan wrote:
> Long shot maybe but anyone out there happen to have HPGL files of common 
> Logic gates: AND, OR, XOR?
>
> I'm trying to do a panel for the CGS Quad Logic gates.
>
> Thanks.
>
> Dave
>
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