Earliest handheld / battery calculator with hyperbolics?

[TomC]

Gene

It was the TI SR50. I remember when it was released.
We were intrigued by that extra trig prefix key!

TomC

(05-08-2018 09:51 PM)Gene Wrote:  datamath may be wrong on that date. The earliest **newspaper** advertisement for the Corvus 500 comes from August 23, 1975 and refers to it as the "new" Corvus 500.

We all know we can't trust marketing...everything is new!


Of course, the TI SR-50 was introduced on January 15, 1974, so perhaps it really was the first with hyperbolics ?