IET - Calculators with no equal

25th January 2024 7:00 pm

Long before laptops, smartphones and tablets, the programmable calculator was the tool of choice for engineers and students who needed portable computing power. Mention of HP calculators of old is usually accompanied by the words “Reverse Polish Notation” which along with the cost of such machines, was enough to put off all but the most dedicated enthusiast. Mark will take you through a brief history of HP’s pocket calculators from the 1970s, the peak calculator era of the 1980s and 1990s, through to current models. Along the way he will explain how to use RPN, and its more fiendish successor Reverse Polish Lisp, and why after 40 years one of HP’s programmable calculators is still in production. Regardless of whether you used to have an HP calculator, still have one or have never seen one before, Mark hopes to educate and surprise you.

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