Do not ever do the following:
1. Remove all screws from a TI-83 calculator
2. Take an external battery pack that holds four AA batteries (remember a TI-83 uses AAA) and populate it with four fresh new batteries
3. Connect the positive terminal of the pack to the positive connection on the calculator circuit board
4. Ditto, except negative to negative
5. Touch the wire
I not only burned myself (well I felt pain of some sort) but also smelled the aroma of burning printed circuit board. Rest assured my little baby is in graphing heaven right now. Thankfully I think it was dead anyway, and I have another calculator and haven't used this one for two years.
Either that or the thing would be graphing at a hellishly fast speed