MANUAL ONLY - The Texas Instruments TI-83 Plus Graphing Calculator Guide Book Manual. The device is a handheld powered by batteries, featuring a regular-sized display and key size. This model is specifically designed for graphing tasks, making it a valuable tool for students, professionals, and anyone in need of precise calculations. The manual-only feature ensures users have the necessary guidance and instructions for utilizing the TI-83 Plus to its full potential.