4 Sep
2006
4 Sep
'06
10:21 p.m.
On 9/5/06, Ethan Dicks <ethan.dicks at gmail.com> wrote:
I have a couple of ancient modules on the shelf here -
they are the
size of an old 3.5 digit DVM module with 4 MAN71 7-segment displays...
My mistake... 4 x MAN72A seven-segment plus 1 MAN73A "+1" display...
so 0000 to 10000...
I have figured out that the main chip is a Mostek
MK5002
counter/display driver, but I can't find any data sheets on Google...
Finally found it...
http://www.datasheetarchive.com/datasheet.php?article=3789216
I'm guessing that it might have been used in some
sort of
pinball or arcade machine because of some of the hits I've
gotten, but I'd just like to be able to reverse-engineer the
pinout of the edge connector on this module.
For the record, the module is an NLS 39-324 - it has the 4.5 digits
on the front, the MK5002N, three 4049 hex inverters, and a fist-full
of discretes. I'm thinking it's either a DVM module or a counter
module.
-ethan