HHC2021 Bob's Calculator Challenge

[KimH]

Thanks a lot for this Andi,

I couldn’t make the link work at first, but now all is good.

I was quite sure that the 28c was about a year before the 28s came out - the 18b was introduced mid 86. in the fall that year I had a chance to peek into the - not completed - 28c manual. Most can imagine the reaction I had. Same package as the 18b and then symbolic algebra, graphics, RPL and all the new stuff.

(10-08-2021 10:28 AM)AndiGer Wrote:  

(10-08-2021 07:04 AM)KimH Wrote:  Can’t find a list anywhere with intro- and obsoletion dates. I am sure one exist, but don’t know where.

Here you can find some info on discontinuation ...
http://www.vcalc.net/hp-date.htm
Andi