On Fri, 22 Aug 1997, Alec Myers wrote:

> >
> >this could be done with one i/o line and about $3.75 USD in components
> > OR three i/o lines and about $1.00 USD in components
> > OR seven i/o lines and about .10 USD in components
> > OR twelve i/o lines and no additional components
>
>
> And while I sit here writing this, it's just occured to me that there's a
> remote-control IC (HS12E I think) that takes 12 binary inputs and clocks
> them out in an odd but decipherable PWM format. That might be the cheapest
> single pin solution.

PTM: How about MC14457, MC14458, MC14497 or equivalent remote controller,
if you find some. connection with just one pin, 'look ma no hands'.

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