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![TI-89 Titanium Disassembly and Backlighting - Cemetech | Forum | Cemetech Labs [Topic]](http://www.cemetech.net/img/projects/ti89tutorial/3.jpg "TI-89 Titanium Disassembly and Backlighting - Cemetech | Forum | Cemetech Labs [Topic]")
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Amazon.com : Texas Instruments TI-89 Titanium Graphing Calculator : Office Products
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![TI-89 Titanium Disassembly and Backlighting - Cemetech | Forum | Cemetech Labs [Topic]](http://www.cemetech.net/img/projects/ti89tutorial/1.jpg "TI-89 Titanium Disassembly and Backlighting - Cemetech | Forum | Cemetech Labs [Topic]")