The Texas Instruments TI-84 Plus CE Graphing Calculator is a used device designed for business, office, and educational purposes. It is a high-quality graphing calculator that is perfect for solving complex mathematical problems. The calculator is manufactured by Texas Instruments and is part of the TI-84 Plus series. It features a color display, rechargeable battery, and a variety of preloaded applications. The model number is TI-84 Plus CE.