Texas Instruments TI-89 Titanium

The TI-89 Titanium was announced together with the TI-84 Plus, the TI-84 Plus Silver Edition, and the financial calculator BA II PLUS Professional early in 2004.The internal construction of the TI-89 Titanium matches now the TI-84 Plus family and makes use of only on printed circuit board (PCB). The position of most components and the shape of the PCB's are identical, only the design of the housing differs among the three calculators.