There were no calculators when I was in school, so we used slide rules.
Today, I have an over-priced watch with integral slide rule. (Not a "smart watch" - though I am not sure how something with a battery life of less than a year would qualify as smart).
It is particularly useful for things like comparing value for money in the supermarket by converting to price per kg, etc. Or GBP to EUR, USD, etc.
-- Warning: Opening your mouth may invalidate your brain!
(Score: 2) by Dr Spin on Friday December 20 2019, @06:00PM
There were no calculators when I was in school, so we used slide rules.
Today, I have an over-priced watch with integral slide rule. (Not a "smart watch" - though I am not sure how
something with a battery life of less than a year would qualify as smart).
It is particularly useful for things like comparing value for money in the supermarket by converting to price per kg, etc.
Or GBP to EUR, USD, etc.
Warning: Opening your mouth may invalidate your brain!