Check the listing for details. Texas Instruments TI-84 Plus Silver Edition Graphing Calculator Gray Tested READ. Condition: Used. Listed at 39.95 USD. This Texas Instruments TI-84 Plus Silver Edition Graphing Calculator is a reliable tool for all your mathematical needs. With a regular sized display and powered by both a power cord and batteries, this handheld calculator is perfect for on-the-go calculations. Featuring calculus functions and a gray color, this model is a great addition to any office or classroom. The Texas Instruments brand is known for its quality and this calculator is no exception. Whether you're a student, teacher, or business professional, this calculator is sure to meet all your mathematical requirements. Texas Instruments TI-84 Plus Silver Edition Graphing Calculator Gray Tested READ Calculator works but has two lines that don’t work on the display