Extended Memory module and HP-41CX

[rprosperi]

(12-16-2018 08:32 PM)Gene Wrote:  The X-memory modules, etc. were introduced some time before the HP-41CX, so this is likely a result of timing. Helps pin down a range for when the module/booklet were produced.

Exactly correct. The Summer '83 EduCALC catalog (#16) lists the Extended Fns/Mem module and Ext Mem modules on p.5 for the 41C/41CV, some months before the 41CX was introduced.

Any reason to dig through Jake's awesome set of EduCALC catalogs is a good one. They're a bit like our own private little historical society resource for topics like this.

Jake's DVD, recently expanded to include all the EduCALC catalogs, plus a bunch of period HP catalogs, brochures and other HP newsletters (e.g. Key Bits Dealer's newsletter, BASIC Exchange, and others) is available here:

http://www.pahhc.org/ppccdrom.htm