The Texas Instruments TI-84 Plus Graphing Calculator is a handheld device powered by batteries, featuring advanced scientific and graphing capabilities. Made by Texas Instruments, this calculator includes functions for calculus and is designed for use in various industries, including business, education, and engineering. Being black in color and without a cover, it is a sleek and efficient tool for solving complex equations and creating graphs with ease. Ideal for professionals and students alike, this graphing calculator is a reliable companion for everyday calculations and problem-solving tasks.