The TI-Nspire is a significant departure from previous graphing calculators with its grayscale screen and PDA-like appearance. It uses an ARM processor and features 16 MB of RAM and 20 MB of storage space. With the exception of a TI-84 Plus emulation mode, is not compatible with any of TI's previous calculators. When originally released, it completely lacked programming capability. This was incrementally improved with new OS revisions over the next few years, and currently, development in TI-BASIC, Lua, and ASM/C is possible.

» Official TI-Nspire home page at Texas Instruments
» TI Connect for the TI Nspire
» Guide Books from Texas Instruments
» Graphing Calculator Comparison
» TI Online Store
» TI-Nspire Lua Scripting

» TI-Nspire FLASH and ROM Downloads

From time to time, TI will update the internal code of their calculators to work around bugs, optimize functions, and even add features. This results in several versions of each calculator in the marketplace.

Known ROM versions:

• 1.0.491
• 1.0.526
• 1.1.8916
• 1.1.9170 (7 May 2007)
• 1.1.9253 (23 May 2007)
• 1.2.2394 (30 August 2007)
• 1.2.2348
• 1.2.2398
• 1.3.2437 (8 January 2008)
• 1.4.11643 (9 July 2008)
• 1.6.4295 (29 October 2008)
• 1.6.4379
• 1.7.2741 (19 May 2009)
• 1.8
• 2.0.0.1188 (5 March 2010)
• 2.0.1.60 (3 May 2010)
• 2.1.0.631 (17 July 2010)
• 3.0.1.1753
• 3.0.2.1791

» TI-Basic Developer

Assembly programming on the Nspire is made possible by the third party utility Ndless, which exploits loopholes in the operating system to allow execution of compiled code.

» hackspire

Several emulators are available to let you simulate TI calculators on your computer. To locate available emulators and learn how to download a ROM image from your calculator, see our Emulators page.