Re: [CAD_CAM_EDM_DRO] Board ????????????

Gentlemen

I came across some boards that might be of use to someone, even
me if I knew what they were. One has a hand written date
on one of the chips indicating 1995. The board say microcontroller 1.
They are 5 x 7 inches. The connector across the end has 40 fingers.
10 are hooked up to the circuit on the board.With the fingers at the top,
in the upper left (component side) is a 5 volt regulator device with
double heat sinks. on the right side are two connectors. One is a
14 pin (2 rows of 7) and the other 20 pin (2 rows of 10)
Next comes a Zilog Z8 Z0867108PEC CPU (?)
Next major component is a 28 DIP socket with a 24 Dip device
Below this is a SN74150N 24 DIP device feeding 8 8 DIP devices
each of which goes to two resistors and thence to a 40 pin (2 rows
of 20 like above). These look like maybe they would go to the coils
of stepping motors ? ? ?
On the left side at the bottom are 14, 16, 18 DIP devices that go
to another 40 pin connector.

I got these wih some Pacific Specialties (Now Danaher) drivers,
stepping motors. I really just thought I wanted the stepping motors
as they are like the ones on a MAX NC Table Top mill and hoped
someone would want some to.

bob mcknight phoenix arizona
bobmcknight@...