FS Hewlett Packard 28S Calculator

[thatmguy]

This was HP's top of the line at one time.

Can do many algebraic, trig, and calculus functions.

Like new, with books, no box.

GONE

Mike

 

[thatmguy]

Anyone interested???

 

[thatmguy]

Back up. Still available.

 

[thatmguy]

Still have this available with new batteries....

A real classis.

 

[Esav Benyamin]

Classic is right. I gave mine to my cousin, who's used it for years professionally as an engineer.

Not only is it comprehenive in its functions, it's really easy to learn and use, too. It is still one of the great calculators out there.

 

[Daniel]

They don't build them like that anymore-it is a tank!

 

[DaveH]

32K and 3 "N" cells right?

 

[rhino]

Is this the one with the brown clamshell case?

I think I had it's predecessor, the 28C when I was in college and grad school.

 

[thatmguy]

Sorry, didn't expect anyone to post to this.

Yup, 32K and 3N's. When it came out, it was the t*ts.

Stil lcan crunch some major math stuff. I used it for linear equations, and wrote some probability programs for it.

This is actually a spare I picked up.

My original one is in its leather pouch, which ya never see available anymore...

What has surprised me is what the 15C model is goin for.... Glad I still ahve that one too. That was my first HP.

Thanks for the comments guys.

Mike

 

[Esav Benyamin]

Probability. That's what I got mine for. On the job, performance analysis. Managers hated me using math to find where the bodies where hidden.

 

[thatmguy]

Still avail.

Never heard back from recent inquiry.

 

[DaveH]

Reverse Polish Lisp sounds pretty cool, email sent.