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Re: [ModularSynthPanels] HPGL for Logic gate symbols

2008-09-14 by David Moylan

Sorry, meant to say it's _not_ quite correct or only correct in the OR 
case and since I have multiple boards I need to be able to differentiate.

David Moylan wrote:
> 
> 
> Right, but + usually means or in boolean logic so it's quite correct,
> and I do have multiple boards I'm going to wire up. If I had a flip
> flop module I could even have a patchable state machine. Wish I could
> have patched rather than breadboarded in college....
> 
> Dave
> 
> Richard Brewster wrote:
>  >
>  >
>  > 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/ 
> <http://pugix.com/synth/catgirl-synth-pulse-divider/>
>  > <http://pugix.com/synth/catgirl-synth-pulse-divider/ 
> <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
>  > >
>  > > ------------------------------------
>  > >
>  > > Yahoo! Groups Links
>  > >
>  > >
>  > >
>  > >
>  > >
>  >
>  >
> 
>

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