Steps on downloading the TI-83 calculator to your home computer, free!!! If this site doesn't work for you, search and try other sites. There are numerous sites for downloading graphing calculators to your desktop.
1.) go to http://education.ti.com/educationportal/sites/US/productCategory/us_sdk.html
2.) click on download beside the calculator
3.) under "download item" click TI-83 Plus SDK
4.) continue as a guest and run the program. continue through all download screens
5.) at the end of the download screens there is a read me page. read and close.
6.) the icon will appear on your desktop
7.) When you click it you get a nondescript screen
8.) go to file and click new
9.)You get anohter nondescript screen. Click on the play button at the top.
10.) once your calculator pops up, go to view and click calc on top to always view your calculator on top