12 Dec
2001
12 Dec
'01
5:35 a.m.
At 09:43 PM 12/11/01 -0500, you wrote:
On December 12, Ken Seefried wrote:
> Perhaps slightly off-topic (other than being a resonably old part), but
> would anyone around here have a datasheet (or, at least, a pin-out) for an
> HP HDSP-2490? This is an odd, 4-digit, 5x7 led matrix display. It's in a
> 28-pin dip, and looks to have some intellegence built in.
>
That sounds very similar to the one used in the HP 9825 and similar
calculators. I have (had?) some HP Electro-Optics catalogs that had data
sheets for such devices. I'll try to find one and look it up.
Joe