The Texas Instruments TI-83 Plus is a graphing calculator designed for business, educational, and personal use. It is a powerful tool for solving complex mathematical problems, creating graphs, and analyzing data. The calculator is manufactured by Texas Instruments and is a popular choice among students, engineers, and professionals. Its features include a large display, programmability, and compatibility with various software applications. The TI-83 Plus is a reliable and efficient calculator that can handle a wide range of mathematical tasks.