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(Taken from ticalc.org calculator page)
Graphing Calculator Models
Texas Instruments has released ten different graphing calculator models over a period of nine years. Here they are in order of release date.
The TI-81 has been discontinued and is no longer in production. In the future, this could happen to the TI-80, TI-82, TI-83, and TI-85 as well, since they are being replaced by the TI-73, TI-83, TI-83 Plus, and TI-86, respectively.
Below you will find links to each calculator page as well as overviews of each. These pages list specifications, features, links to useful files, and links to other related sites.
|TI-81||Jul 1990||TI's first graphics calculator, designed for Algebra I and Precalculus.|
|TI-85||Jul 1992||A powerful engineering and Calculus calculator.|
|TI-82||Jul 1993||An easy-to-use calculator for science and secondary mathematics.|
|TI-80||Feb 1995||A basic graphing calculator for middle school students: Pre-Algebra and Algebra I.|
|TI-92||Dec 1995||A sophisticated hand-held calculator with a QWERTY keyboard and 3-D graphing capabilities.|
|TI-83||Aug 1996||An improved TI-82 with financial functions, usability enhancements, and built-in assembly support.|
|TI-86||Jun 1997||A souped-up TI-85 with all the refinements of the TI-83.|
|TI-92 Plus||Jun 1998||An upgraded TI-92 that features Flash ROM technology, built-in assembly support, and Advanced Mathematics Software.|
|TI-73||Jun 1998||An expandable, math and science oriented calculator for middle school students.|
|TI-89||Aug 1998||The power of a TI-92 Plus in a handheld design.|
|TI-83 Plus||Apr 1999||An upgraded TI-83 that features Flash ROM technology, more user available RAM, and support for commercial calculator application software.|