[sdiy] 4 bit binary to 7 segment hex decoder?

[KA4HJH]

>There has not been one in very many years (that I know of). There was an
>early decoder for TV sets etc. in CMOS, but I have no data books old enough
>to show it.

I remember seeing them ages ago.


>This would be very easy to program in a PAL.  If someone wants to make some
>I'd be interested in participating. I'd like to buy a bunch myself.  This
>would
>make a
>worthy group DIY project.

A PAL sounds OK but it would be nice to have the MCU approach as well since
it could be incorporated into a larger project.

Seems to me that it would be easy to get a small MCU or other programmable
device to do this a lot cheaper than what those decoders used to cost.
Could drive two displays for a full eight bits.

I suspect that there are those who would also like to have an 7/8 bit to
decimal (three display) decoder as well, while we're at it.


-- 
Terry Bowman, KA4HJH
"The Mac Doctor"