HP 70 Business Calculator from 1974

[@a.lithia5664]

Yes! The rarest of the hp classics. Congrats, and thanks for the high-quality content.

[@kingofcotham9999]

Yet another very interesting video. Never knew there was an HP70!!

[@TT2601-h1n]

Thanks a lot for the great video. Very beautiful calculators! 👍

[@kimholm4607]

I had one of these some 20 years ago, sold it to a serious collector, maybe the most serious hp collector there is

[@CalculatorCulture]

Intriguing who is that? Maybe I could interview them.on the channel.

[@kimholm4607]

Hp-Collection

[@kimholm4607]

Mathias W

[@CalculatorCulture]

@@kimholm4607 ah yes of hp-collection.org

[@theedspage]

This was before finance calculators added logarithms, statistics, and the exponential function.

[@CalculatorCulture]

That's true. Interestingly the HP 70 manual has an example of how to calculate logarithms using the TVM functions!