This set of four user reference books is a must-have for anyone who owns a Texas Instrument graphing calculator, specifically the Ti-83, Ti-83 Plus, and Ti-85. Each book is filled with helpful information and tips for utilizing the calculator to its fullest potential. Ideal for students, educators, or anyone who needs a reliable calculator for their work or hobbies.

The books cover a range of topics such as programming, graphing, and problem-solving. With clear instructions and examples, these guides will help users become more proficient and confident in using their calculators. Whether you\'re new to Texas Instruments or are a seasoned user, these reference books are an essential addition to your library.