HP 42S, variations?


Other than country of manufacture, are there any different ROM versions or other important variations in the history of the famous 42S?


There is a speed up routine that is programmable on early units that is not programmable on later units. In the later units you have to manually change the speed. I'm sure if you searched the forum archive you could find the routine. Randy


Yes, there are 3 versions of the HP42S: A, B and C.
To find out the version of your HP42S do:
then back-arrow,
then decimal-point.
You will see a letter at the left of screen (the version) and a number a the right (kind of self-test result, like WSLOG for HP48 serie).
To recover, do EXIT-SQRT.

Possibly Related Threads…
Thread Author Replies Views Last Post
  HP-35 ('72) Bug Fixes & Variations Matt Agajanian 2 1,168 04-19-2012, 06:52 AM
Last Post: Frank Boehm (Germany)
  42s questions and 42s vs 35s snaggs 13 5,353 09-19-2011, 02:44 AM
Last Post: snaggs
  11c, 15c, 16c slip case variations question pespen 1 917 07-14-2008, 02:58 PM
Last Post: Eric Smith
  Pioneer model variations Randy 10 2,739 03-16-2006, 02:41 AM
Last Post: Marcus von Cube, Germany
  Questions about 32SII and 18C variations Thomas Radtke 8 2,011 09-26-2003, 09:40 AM
Last Post: Paul Brogger
  HP-65 Variations Mike 4 1,288 04-13-2002, 04:33 PM
Last Post: David Smith

Forum Jump: