How the TI-84 is Still the Best Selling Calculator After a Decade

The most popular graphing calculator, the TI-84 Plus, has gone largely unchanged in 10 years. The Washington Press takes a look at how Texas Instruments is able to sell the same calculator for a decade in a world of constantly changing technology. 

WASHINGTON POST: The unstoppable TI-84 Plus: How an outdated calculator still holds a monopoly on classrooms

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