Odd Hp leds in dip package

But the HDSP 2010 have only 12 pins. I think his are 28 pins, hence the HDSP 2450 suggestion, the closest I could find working off my 1986 catalog. Marc From: cctalk <cctalk-bounces at classiccmp.org> on behalf of "cctalk at classiccmp.org" <cctalk at classiccmp.org> Reply-To: Al Kossow <aek at bitsavers.org>, "cctalk at classiccmp.org" <cctalk at classiccmp.org> Date: Wednesday, November 21, 2018 at 10:31 AM To: "cctalk at classiccmp.org" <cctalk at classiccmp.org> Subject: Re: Odd Hp leds in dip package probably hdsp-2010 1988 opto catalog pg 609 in the scan On 11/21/18 8:30 AM, Al Kossow via cctalk wrote: On 11/21/18 7:52 AM, devin davison via cctalk wrote: Hello. Encountered a couple odd parts in the pile today, not sure if they are anything special. they're pretty cool quad 5x7 alphanumeric LEDs check http://bitsavers.org/components/hp