TL;DR: The forever-useful Texas Instruments TI-84 Plus graphing calculator is on sale for $88 at Walmart, saving you $28. Since the dawn of time (okay, 1990), high school and college algebra classes ...
The TI-84 Plus graphing calculator has a 15 MHz processor, 24 kilobytes of RAM, and a 96x64 black and white screen. It has an Amazon list price of $190. The Kindle Fire HD has a 1.5 GHz processor, 8GB ...
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