[sdiy] 7 Segment Display Driver?

fmg eqys at iposadas.com.ar
Thu Oct 20 23:00:01 CEST 2005


74LS154 and ~50 diodes? (limiting resistor, common anode display,
diodes pulling-down) I remember doing something like that 25 years
ago in school.

Now... I don't remember if it worked (girls were always a problem
in my designs dedication)

Fabio
.

xamboldt wrote:
> 
> Yeah, that would probably be the easiest, but unfortunately I don't have a
> PIC programmer or the knowledge to program one. :( So I was hoping to do
> this in olden-days-style, as I do have a soldering iron and the knowledge to
> use one. :) Not that I'm against PICs, but I don't plan on doing enough of
> them to invest in the equipment/skill.
> 
> Thanks for the lead on the 9368, looks like it's the answer for hex, but has
> been discontinued... The search continues...
> 
> Chris
> 
> On 10/19/05 2:26 PM, "The Old Crow" <oldcrow at oldcrows.net> wrote:
> 
> >
> > These days, I'd just program a PIC to do this.  In the olden days, the
> > hex display driver was the 9368 (Fairchild, I think).
> >
> > Crow
> > /**/
> >
> > On Wed, 19 Oct 2005, xamboldt wrote:
> >
> >> Hey Everyone,
> >>
> >> Do any of you know of an IC that would take 4-bit binary and drive a
> >> 7-segment display to either show Hex, or drive 2 displays to show decimal
> >> 0-15 (or 1-16)? I believe I've figured out how to do the decimal version
> >> with external logic and a 4511, but if there's a one-chip solution, I'd love
> >> to know about it...
> >



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