Texas Instruments TI-83 Plus Graphing Calculator and TI-83 User's Manual Texas Instruments TI-83 Plus Graphing Calculator and TI-83 User's Manual Manufacturer: Texas Instrument Large 16-character, 8-line display for graphs and charts Preloaded with an array of educational apps, including StudyCards, Vernier EasyData, and more Powerful 160KB upgradeable flash