Anybody use a calculator like this in the 1970s?

This was the first calculator I ever owned. Made by Texas Instruments and possibly the last thing I ever got from that company.

Think this wizard piece of technology was from around 1978 and could do everything from long division to logarithms. But – we weren’t allowed to take them into exams. Infuriatingly, we still had to use “log books” to calculate logarithms and slides rules.

Anybody who remembers slide rules will know how fiendishly difficult to use they were. I hated them. Still shudder when I see one.

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