MN-Skeptic wrote: ↑Thu Jan 18, 2024 12:25 am
How many of us learned how to use a slide rule in high school?
I think I learned the very basics of sliderulery, but likely from my older siblings and my own curiosity - I think I worked out on my own that they were logarithm scales (I'd learnt about logs). I don't remember being taught by a teacher - although I remember one classroom had a huge demonstration slide rule, about 1.5 m / 5 feet long. We calculated using log tables in books rather than slide rules; perhaps that was a conscious decision by the school? We were given a useful booklet of logarithmic and trigometric tables, which also had general scientific info: periodic table, densities, etc. of elements and simple compounds. All not needed now.
Pocket calculators came in just before I went to college, but only the richest kid in my class had one (but that was an HP, that looked identical to their products for the next few decades).
I remember calculators having -= and += buttons, which always confused me. Long gone. I liked Casio scientific calculators, simply because the feel of the buttons appealed. And I couldn't be bothered with RPN unless I borrowed someone's calculator.
Never used Napier's Bones. Some of those early calculating gadgets are glorious, more ingenuity rendered pointless by bits and bytes.
If ever in London, do visit the Science Museum and see the (modern) Babbage's Difference Engine. If you can see it working, that's best, it's a ballet of brasswork spinning, clicking and whirring. I don't know if they run it now, but they did shortly after it was being built in the 1990s, when I saw it. They also have the 1820s (?) original demonstration model.