What can a stock 41CX do that a 42S can't?

[Thomas Okken]

(01-02-2018 03:00 PM)Dave Britten Wrote:  I'm trying to get a general idea of functionality that would be lost going from a barebones 41CX to a 42S, mostly to get a feel for what my DM41L can do that my DM42 can't. I know Free42 adds some of the time module functions, but is obviously lacking 41 extended memory functions.

Unless you're thinking of running programs that specifically use Extended Memory, you won't miss it on the 42S. The 42S has more available RAM than a 41CX with two Extended Memory modules, so you won't need program files, and matrices can do most of what data files can do, including sequential access. And the DM42 has even more RAM, and its own version of Extended Memory in the form of a flash disk (but without the ability to access it programmatically: no SAVEP, GETP, etc.)

The real HP-42S has no clock, while Free42 and the DM42 have a subset of the Time Module functionality, which includes DATE and TIME, but not alarms or the stopwatch.

The most significant downside of the real HP-42S is the lack of bi-directional I/O, and the DM42 fixes that with its flash drive that can be mounted on a PC or Mac.