I suppose I'm showing my age by posting this, but my math instructor in college wouldn't let us use a calculator until we could demonstrate that we knew how to use a SLIDE RULE. My first handheld calculator had a Nixie tube readout, used "D" batteries and was about half the size of a textbook.
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ReplyDeleteI suppose I'm showing my age by posting this, but my math instructor in college wouldn't let us use a calculator until we could demonstrate that we knew how to use a SLIDE RULE. My first handheld calculator had a Nixie tube readout, used "D" batteries and was about half the size of a textbook.
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