Post Reply 
HHC2021 Bob's Calculator Challenge
10-08-2021, 12:24 PM
Post: #16
RE: HHC2021 Bob's Calculator Challenge
(10-08-2021 07:04 AM)KimH Wrote:  I had 2 - #1 (odd one to know) and the long list of “unused” model-numbers, 44 was what got my attention there.

On the shortest lifespan, I had 28C - I recall it was about 12 months between the C and the S. Can’t find a list anywhere with intro- and obsoletion dates. I am sure one exist, but don’t know where.

Fun video to play along with, thanks Bob!

Checking... The 28C was officially available Jan 87 - Feb 88, so 14 months and thus this ties with the HP-70. Probably the 28C was not discontinued until February to allow enough time for the new 28S (introduced in January) to fill the channel.

Good call Kim!!

I am learning so much here! Smile

--Bob Prosperi
Find all posts by this user
Quote this message in a reply
Post Reply 

Messages In This Thread
RE: HHC2021 Bob's Calculator Challenge - rprosperi - 10-08-2021 12:24 PM

User(s) browsing this thread: 1 Guest(s)