Sharp calculator with Hyperbolics from 19740407
1974, April 4th ad from a NJ newspaper.
Sharp ? Don't recognize the model.
Which model is this? Looks like the PC-1801 or PC-1802, but those did not have hyperbolics.
Any earlier model with sinh, cosh, tanh built-in?
April 1974 seems pretty early. :-)
It could of course be a typo in the advertisement, but that would seem to imply hyperbolic functions would have been somewhat known at the time.
?
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 ?
It appears that HP's first handheld with hyperbolics was the HP-27 introduced around Jan 1976, two years after the SR-50.
Edit:
Demosthenes wrote to me and mentioned he thought the HP-32E (introduced in 1978) was the first HP handheld model with hyperbolics. I was going by the features listed for the HP-27 on this site.
http://www.hpmuseum.org/features/27f.htm
After looking at the pictures of the HP-27 keyboard, I don't see hyperbolic keys like I do on the HP-32E. I think that Demosthenes is right and the HP-27 features page is wrong.
(05-08-2018 09:16 PM)Gene Wrote: [ -> ]Sharp ? Don't recognize the model.
Which model is this? Looks like the PC-1801 or PC-1802, but those did not have hyperbolics.
Any earlier model with sinh, cosh, tanh built-in?
This looks very much the Sharp PC-1801 which don't have hyperbolics, it may be a confusion with the Sharp PC-1001 from 1973 which has built-in hyperbolics, but the PC-1001 is a desktop calculator, not a handheld / battery calculator.
(05-09-2018 03:26 AM)Steve Simpkin Wrote: [ -> ]After looking at the pictures of the HP-27 keyboard, I don't see hyperbolic keys like I do on the HP-32E. I think that Demosthenes is right and the HP-27 features page is wrong.
You're both right, the 27 does not have hyberbolics. You should let Dave Hicks know about the error in the table.
Wrong - 27S has COSH, SINH & TANH & arc functions.
(05-09-2018 01:43 PM)Gerald H Wrote: [ -> ]Wrong - 27S has COSH, SINH & TANH & arc functions.
The HP-27S (introduced in 1988) does but the HP-27 (introduced in 1976) does not. Two very different calculators.
I've updated the 27 features page. Thank you!
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 ?