I’ve always admired Hewlett-Packard calculators. In my earliest college days at DeVry, there was a “friendly” rivalry between HP and “Texas Ignorance”; at various times in my life I’ve owned two of them: an HP-41C and later on, an HP-28S, which really pissed off my stats prof in 1991. So I decided to go back to my earliest geek roots to prepare for the future:

The reason I got this: I signed up for an investor development program at my place of employment. Last week I took a pre-assessment test, which I found out yesterday that I passed. I had one phone interview with a recruiter which went well, and another is scheduled for tomorrow. I want to obtain a Series 7 License and if I can get into this program (which I should know, one way or the other, in the next couple of days), my employer will sponsor me for the test. But I will have to put in some serious study time outside of work: 120 hours’ worth.
I’m serious. I want this.

My favorite calculator. I’ve had my HP-15C for over 20 years now.

Did have a TI for a while. Interesting, programmable, read little magnetic strips. I forget the model. Cool at the time (early ‘80s). But HP was better. RPN is just easier to use. Not nearly as bulky as the TI.

I also have an HP-11C that I picked up at a yard sale for like $2.00. Owner didn’t know RPN. I’d have probably read the manual before I let it go for $2.00. Silly person.

Good luck!

Something I forgot to add: RPN kicks a**!