Post Reply 
Retro Review: HP 20S and HP 21S
04-08-2017, 12:15 AM
Post: #1
Retro Review: HP 20S and HP 21S
Spoiler alert: they are awesome. I wish HP kept producing these two models.

http://edspi31415.blogspot.com/2017/04/r...s-and.html
Visit this user's website Find all posts by this user
Quote this message in a reply
04-08-2017, 12:26 AM (This post was last modified: 04-08-2017 12:26 AM by nsg.)
Post: #2
RE: Retro Review: HP 20S and HP 21S
Just these two? Don't you wish HP kept producing some other awesome models?
Find all posts by this user
Quote this message in a reply
04-08-2017, 01:04 AM
Post: #3
RE: Retro Review: HP 20S and HP 21S
I have one of each model in excellent condition and they are great! I keep thinking I should sell them since I'm a RPN guy, but I bought them because I can't resist that form factor and key layout!
Find all posts by this user
Quote this message in a reply
04-08-2017, 01:33 AM
Post: #4
RE: Retro Review: HP 20S and HP 21S
I believe a user can key in the time value of money program from the 21S into the 20s and it will work as-is.

As you mention, you just cannot save it into permanent memory. Only the "continuous memory" in the machine.
Find all posts by this user
Quote this message in a reply
04-08-2017, 01:34 AM
Post: #5
RE: Retro Review: HP 20S and HP 21S
(04-08-2017 12:26 AM)nsg Wrote:  Just these two? Don't you wish HP kept producing some other awesome models?

Not just. The 48 G+, in 48 SX colors comes to mind. Also, 42S, 15C, 11C, and 41C.
Visit this user's website Find all posts by this user
Quote this message in a reply
Post Reply 




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