When I was in school in the late 60s a slide-rule company gave a special offer to us, which all of our parents (wanting us to succeed in the bright technological future) duly bought into. As far as I know, none of us ever actually used them, preferring paper log tables.
We were also taught how to use mechanical adding machines, possibly the last people to be lumbered with this information, which mercifully I have completely forgotten.
We were also taught how to use mechanical adding machines, possibly the last people to be lumbered with this information, which mercifully I have completely forgotten.