Reading old HP-65 program cards

[Gene Dorr]

Right, I get that. But what I was thinking about was the length of time the write head has to induce flux on a given spot on the card would vary depending on pull speed. At any rate, my concern is with HP-65 cards, and anecdotal feedback from one person (so far) is that old cards still are readable.

Rollers: I no longer have my HP-65 (weeping and gnashing of teeth for my short-sighted stupidity), and so am unable to answer for myself the critical question -- do all HP-65/67 polyurethane feed rollers turn to gum over time, or are there environmental factors at work that cause some, but not all to degrade?