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Legends are Reborn: HP-12C and HP-15C Calculators

Posted by Andrew at 5:40 PM on September 1, 2011

To celebrate the 30th anniversary of the HP-12C financial calculator, HP are producing a limited edition of this classic calculator along with a reproduction of the 15C scientific calculator. Launched in 1981, the 12C became the de facto “badge of honour” for any self respecting businessman. Still a cult classic with fans the world over, it’s the longest selling HP product.

There’s some great reminiscing going on over at HP’s The Next Bench, including interviews with 12C’s creator, Dennis, who demoed the calculator to Bill Hewlett thirty years ago.

Pictures from the HP Museum by David Hicks.

Young’uns raised on Casio and Sharp calculators will be surprised that these use Reverse Polish Notation (RPN) for the entry of formulae, rather than the more usual “1 + 1 =” approach. RPN would say this is “1 ENTER 1 +”, if I recall right.

I remember my father having HP calculators – they had little red LED displays before LCDs appeared – and him showing me how RPN worked. And the way the buttons kind of rocked back rather than simply pressing down. Glorious and I want one. I shall have to keep my eyes on the HP’s UK site – the standard 12c is available but I’d be more interested in the 15C which hasn’t been around for years.

It’s good to see that HP can produce something that lasts longer that the TouchPad.