On 11/21/18 7:52 AM, devin davison via cctalk wrote: they're pretty cool quad 5x7 alphanumeric LEDs check http://bitsavers.org/components/hp

Those would make the coolest wristwatch ever. I can help wth PCB design and microcontroller firmware if that's your intended use; I made a watch with an old LED bubble display a while ago ( https://www.andersknelson.com/blog/?p=11) though I'm aware these are matrix displays and not seven-segment. =] -- Anders Nelson +1 (517) 775-6129 www.erogear.com On Wed, Nov 21, 2018 at 1:31 PM Al Kossow via cctalk < cctalk at classiccmp.org> wrote:

Try to look up HDSP-2450. These are 5x7 alphanumeric displays with shift register drivers included. Yours might be an earlier version of that, or just a commercial temp version of that (the HDSPs are extended temp -55/85C). Maybe the internal part used in the HP9825 or HP 9830 displays, then later commercially sold as the HDSP 2xxx series. I can scan the HDSP data sheet if you can?t find it online. Maybe this will help: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&… If you don?t need them I?ll take them :-D Marc From: cctalk <cctalk-bounces at classiccmp.org> on behalf of " cctalk at classiccmp.org" <cctalk at classiccmp.org> Reply-To: devin davison <lyokoboy0 at gmail.com>, "cctalk at classiccmp.org" < cctalk at classiccmp.org> Date: Wednesday, November 21, 2018 at 7:53 AM To: "cctalk at classiccmp.org" <cctalk at classiccmp.org> Subject: Odd Hp leds in dip package Hello. Encountered a couple odd parts in the pile today, not sure if they are anything special. Hp branded dip packages with gold leads. They appear to be leds in 4 grid patterns on the face. Im curious what they are out of, most likely an old hp computer or calculator. Part number on the back is hp5033592-101 i could not find any information online about them. If they are of use to someone with a hp conputer let me know. If not im trying to find a datasheet and use them in a project. Pictures : https://i.postimg.cc/dtJTGZfm/2018-11-21-10-48-34.jpg https://i.postimg.cc/pL6hNGLq/2018-11-21-10-49-19.jpg https://i.postimg.cc/C1Nw054S/2018-11-21-10-50-37.jpg