What differences or similarities does your application have with the symbulator (ti68k)? If there is enough interest and I have time available I'll keep improving the program and its documentation. You can also click on the attached image to see how the program looks like. Here is a short introductory video for the program that closely follows the documentation uploaded to SourceForge. The results of the solution are displayed in the circuit editor itself. The non-linear elements supported include: BJTs, MOSFETS, diodes, LEDs, and zeners. It can solve both AC and DC circuits with both linear and non-linear elements. The program implements a full graphic interface to edit circuits, with useful functionality such as copy/paste, undo/redo, moving and rotation of parts, etc. It is Electric & Electronic Circuit Solver for the HP Prime. Finally, my first post on this forum! I want to share with you a program I have been working on for the last year or so.