Threaded Mode | Linear Mode

**Katie Wasserman** · (This post was last modified: 11-07-2014 04:56 PM by Katie Wasserman.)

(11-07-2014 04:12 AM)Namir Wrote: What is the difference between the HP9825A and the HP9825B? Aside from the additional memory in the 9825B, does this model have other ROMs built in?

Namir

The 'B' model had the large full-travel keys, the earlier 'A' models had the low profile keys (like the 9815). I think that somewhere mid-production HP switched the 'A' model to full-travel keys.

The major differences where the extra built-in ROMs in the 'B'. It had lots more functionality that were only options in the 'A'. I'm not sure, but I think that all the ROMs that were optional for the 'A' (advanced programming, matrix operations, i/o, etc.) were built into the 'B'.