Buy it from one of these stores:
alaTest.com Professional Review.
Review summary of Texas Instruments TI 89
, Jan. 19, 2012
newegg.com Professional Review.
Great calculator!
, Feb. 26, 2007
Comments:
QuickTake:
Pros: Probably the best calculator you can buy.
Cons: Due to it's many functions you may want to find if it is even allowed for what your intended use is.
toptenreviews.com Professional Review.
TI 89 Titanium
Comments:
TopTenREVIEWS Bronze Award winner for best graphing calculators is the powerful TI 89 Titanium. This device is full of useful and helpful features, boasting subject support for nearly every major high-school and college class. This model is a departure...
Review Verdict: Support for this version of Texas Instruments’ famous line of calculators is as complete as their other models. Customer service is reachable via telephone and email. An extensive FAQs database houses guides for nearly any calculator function. Texas...
TopTenREVIEWS Bronze Award winner for best graphing calculators is the powerful TI 89 Titanium. This device is full of useful and helpful features, boasting subject support for nearly every major high-school and college class. This model is a departure...
Review Verdict: Support for this version of Texas Instruments’ famous line of calculators is as complete as their other models. Customer service is reachable via telephone and email. An extensive FAQs database houses guides for nearly any calculator function. Texas...
wired.com Professional Review.
Texas Instruments TI-89 Titanium Graphing Calculator
Comments:
Statistically speaking, if you've held a graphing calculator, it was probably made by Texas Instruments. The TI-89 Titanium continues this legacy with more memory, more pre-installed applications, and more extra math goodies than previous iterations....
Statistically speaking, if you've held a graphing calculator, it was probably made by Texas Instruments. The TI-89 Titanium continues this legacy with more memory, more pre-installed applications, and more extra math goodies than previous iterations....
QuickTake:
Pros: Most powerful TI model allowed on AP and SAT tests. Updated BASIC makes creating programs easy- if you have a rudimentary understanding of the language. Includes PDA functions like contacts and calendar. Customizable icon menu can tailor apps for each...
Cons: 300-page manual will be ignored by all but true geeks. May be too much calculator for casual users.
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OVERALL RATING
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OVERALL RATING
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alaTest has collected and analyzed 701 reviews of Texas Instruments TI 89 from international magazines and websites.
Review Verdict: Experts rate this product 80/100 and users 90/100. Comparing these reviews to 16299 other Calculators reviews gives this product an overall alaScore 37/100 = Inferior.
Read full review at alaTest.com