HP-41 application module for basic electronics?

[Gordo51]

I could swear I had an application module that did basic electronics calculations, for example, capacitors in parallel, resonant frequencies, etc. I recall trying to use this some time ago but could not figure out how to correctly enter values.
I decided to buy the HP Museum memory stick with all the module manuals with the hope this would help. I have the Circuits 1 module in my HP-41CX and can initialize this by following the manual but this does not seem to do what I recall.

Am I totally mistaken in what I recall? Could I be confused with my HP-48G that I once owned (it died)? I could use some of these simple calculations in my hobby work. I know there are online calculators but really thought the 41 could do this.

Any help appreciated.