Difference between pocket computer and programmable calculator?

[Guenter Schink]

I think there's no IEEE standard for distinction of pocket computers vs. programmable calculators.
The HP41 left aside I'd suggest a programmable calculator in general is confined to key-stroke programs whereas the pocket computer is programmed in a language (e.g.Basic) although many have short cut keys, but that's only short cuts.

The HP41 (even more the RPL calculators) obviously fits in the family of pocket computers although in disguise of a calculator. You may write your programs entirely (?) without using any shortcut from the keyboard, except for the "XEQ" key, which can be seen as a key for programming mode.

From this Museum:

Quote: "The HP-41C represents a totally new concept in the design of Hewlett-Packard calculators. In fact, because of the advanced capabilities of the HP-41C, it can even be called a personal computing system. The HP-41C is the first Hewlett-Packard handheld calculator offering an exciting array of alphanumeric capabilities.

With so many different kinds of calculator uses and applications in the world, we at Hewlett-Packard decided we could provide a significant contribution by designing and building you a quality calculator with expandable and flexible capability. The alphanumeric HP-41C is just the calculator."

Günter