Ah, great Dave, thanks. Rich -- Rich Cini http://www.classiccmp.org/cini http://www.classiccmp.org/altair32 On 9/26/19, 8:08 PM, "Dave McGuire" <mcguire@neurotica.com> wrote: On 9/26/19 7:04 PM, Richard Cini via vcf-midatlantic wrote: > I’m getting back to playing with my 11/23 and I was wondering is anyone could recommend a good board or boards for simple AD and straight digital data acquisition? Maybe even a combo board? The backplane is a Q18/CD (too chicken to convert it to Q22). I don't know of any offhand with both analog and digital I/O (not saying that there aren't any, I just don't know of any offhand), but for analog, the AXV11 is very nice, and easy to program. If your PDP-11 were Unibus, I'd recommend the AR11, but alas. -Dave -- Dave McGuire, AK4HZ New Kensington, PA