grammar (series is singular), model name clarification
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The '''TI-89 Titanium''' is an advanced graphing [[calculator]] released by [[Texas Instruments]] in 1998. The series are considered superior to previous TI graphing calculators due to their advanced symbolic manipulation of equations and the ability to recognize other [[computer]] languages. Also, the calculators were the first ones to use the 68000, or more commonly called as the 68k, [[programming language]].
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The '''TI-89''' is an advanced graphing [[calculator]] released by [[Texas Instruments]] in 1998. A modern model of the device is the TI-89 Titanium. The series is considered superior to previous TI graphing calculators due to its advanced symbolic manipulation of equations and the ability to recognize other [[computer]] languages. Also, the calculators were the first ones to use the 68000, or more commonly called as the 68k, [[programming language]].