Download or read book The SAT Operating System, A Calculator Program for Scoring Higher During the SAT Test: TI-89 and TI-89 Titanium Edition written by Calc-Tech LLC. and published by Calc-Tech LLC.. This book was released on with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the instruction manual for users of the SAT Operating System designed for the TI-89 and TI-89 Titanium Edition graphing calculators. You can use the SAT Operating System on your calculator during the SAT to work problems faster and with greater accuracy during the calculator-approved math sections of the test than you ever could without it.