HP 30b Programming

[Eddie W. Shore]

I like that the HP 30b had the Black Scholes calculations built it in. However, you would never know it if the calculator did not have the optional, plastic, overlay on it.

Programming on the 30b was kind of a second thought: only 290 keystrokes and as others mentioned, literal keystrokes. That would not be much of a problem had a lot of functions were not buried in menus.