The Texas Instruments TI-83 PLUS Programmable Graphing Calculator is a handheld device with regular key size and display. It is a fully programmable calculator designed for graphing and solving complex mathematical equations. Powered by batteries, this model is made in the United States by Texas Instruments, known for its reliable and efficient calculators for business and industrial use. Perfect for students, professionals, and anyone in need of a versatile and powerful calculator for daily tasks.