Hyperbolic functions post 35

[Steve Simpkin]

Matt, the more I research this the more interesting I find it. Just looking at LED models, I think the HP-32E was the only model that had hyperbolic functions built-in. It is even lacking as a standard feature in the HP-41C. The scientific Voyager, Pioneer, HP-48/49/50 and future models seem to all have it.

Regarding TI LED models, as you note they did include hyperbolics on their first scientific model the SR-50. They were also on the SR-50A, SR-51, SR-51A and short lived TI-55. Hyperbolics may have been on other TI LED models but I don't think so. TI made a lot of LED and LCD scientific calculator models.

http://datamath.org/Album_Sci.htm