This page is dedicated to SSDT (Solid State Device Toolbox) for Ti-89. This program, writed by me,  will be a great help for everyone involved, for professional or studying motives, in analizing semiconductor devices at physical level. Tanks to this program set you'll be able to caracterize completly the physic parameters of devices, for example: mobility, diffusivity etc. Furthemore, thanks to the "most used" menu, that collects most used variables, you'll take an half of time to write your formulas!

Then what you're waiting for, download now the SSDT and let me know what do you thing about it!!!