[svlug] RS-232 electronics help wanted

[Walt DuBose]

Ah ha, ham radio strikes again.	-- wdd

R P Herrold wrote:
> 
> On Fri, 18 Jan 2002, William R Ward wrote:
> 
> >
> > Trouble is, the barcode scanner won't talk to my laptop, because the
> > laptop's serial port uses RS-232 voltags (+/- 12V) and the scanner
> > uses TTL voltags (0/5V).
> >
> > When I was in high school I had a friend who showed me how you can use
> > 1488 and 1489 chips to do this kind of thing.  But electronics was
> 
> First hit at google with  RS-232 at 1489    looks perfect
> 
> http://www.angelfire.com/fl3/technicothica/ttlrs232.html
> 
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