HP 28s - Mode Menu

The mode menu is fairly standard, with display modes for scientific, engineering, and fixed and changing degrees and radians. It has the added options of being able to turn on and off the command-retrieve, the stack undo, and retrieving the "last-x" values. It also includes a nifty screen for being able to print the settings for later reference or documentation.

[@joegerba867]

Great video! Thanks for sharing.

[@west]

Is this real Joe, or spam Joe? :)

[@joegerba867]

@@west , real of course! No spam here!

[@shadowdevo]

Not sure if there's a specific reason why you don't wanna come chat with us but we'd still love to have an oldschool RS speedrunner come and be a part of the community.

[@mauriciolacruz]

Does this 28S have the same solid "click" feel on the keyboard like all other vintage HP calculators?

[@west]

It's pretty solid, I think the pioneer series had the best feel of HP's keyboards though.

[@mauriciolacruz]

@@west
The 48 series (48G, etc) has the same solid feel than the Pioneer series.

[@juanmanuelah]

Hello. May I ask you anything? What about the batteries it takes? What voltage are they of? Thanks.

[@west]

Sure, I believe they are "N-cell" type batteries (sometimes called "LR1"). Should be three of them and since they are alkaline, they will be about 1.5V each.

[@juanmanuelah]

@@west Thanks, Man. I appreciate it.

I've the same problem with the battery tray :-)

[@mumblety96]

pretty sure there's a free download to 3D print a replacement.

[@CliffStamp]

That calculator makes me want to do a bunch of calculation heavy engineering classes.