How is the TI-83 calculator still around? (repost)

Reposting a popular older post for Thanksgiving break

TI-83 Plus Review

Texas Instruments 84 Plus Ce Graphing Calculator - Bionic Blue : Target

Talking To A Texas Instruments Calculator

Restoring Deleted Lists in TI 83 Graphing Calculator

Texas Instruments Familiar TI 84 Plus Graphing Calculator - Office Depot

Texas Instruments Calculators Review: TI 84, 83 or 89?

Texas Instruments Calculators Review: TI 84, 83 or 89?

Remember Your Old Graphing Calculator? It Still Costs a Fortune — Here's Why

Texas Instruments Ti-83 Calculator for Sale in Newark, NJ - OfferUp

Hello! I bought this TI-83 secondhand. It was working fine for a day, until today where it only has a blank screen when I turn it on. Any idea on what might

The Common High-School Tool That's Banned in College - The Atlantic

The TI-83 Plus is an easy-to-use graphing calculator for math and science that lets students graph and compare functions, as well as perform data plotting and analysis. Its FLASH ROM memory allows students to update and add software applications (Apps). Count on TI calculators at exam time. You can use this TI graphing calculator on the PSAT, SAT and ACT college entrance exams, IB and AP tests.

Texas Instruments Calculator, Graphing