For HP fans: HP 85 + HP 7970 + HP 2631 demo

CuriousMarc curiousmarc3 at
Wed Feb 10 01:17:43 CST 2016

In case you had not seen it already. I finally managed to control my big HP 7970E 9-track tape and my HP 2631G dot matrix from the little HP 85 that could. Hey, they all talk the same HP-IB after all (well, not really but close enough). Here is the resulting demo of this odd 1970's trio:

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