Calculator Wars at your School

[rprosperi]

(08-04-2022 02:09 PM)cruff Wrote:  Dug out the circular side rule my grandfather gave me that I used in high school chemistry classes. I also had one of the simpler TI calcs with square root, but I didn't like bringing it to school much because it was so expensive (for someone who scrimped from a paper route to get it).

Nice! I got one of these from a friend around 1972. These units came with many brands printed (they were advertising giveaways) on them, but also with many different sets of content on the back and both sides of the inner insert. I believe the earlier ones had a simple list of elements on the back, while later ones had a Periodic Table of the Elements. My original unit, a model 600 with sponsor "Enjay" had a periodic table that included elements up to number 103, so one element newer than this one. BTW, the "Enjay" logo appears to the same color & style as used by Esso (forerunner of Exxon) but no idea if they are related.

Update: Enjay Chemicals was the original name of Exxon Chemicals, and so the logo appearing similar to the Esso (Standard Oil of NJ prior to rebranding as Exxon) logo is not a coincidence.