HP 38G Calculator
Patricia Campbell of Los Altos California donated this HP-38G programmable graphing calculator by Hewlett Packard. It was introduced in 1995 with a suggested retail price of 79.95 USD. HP credits a committee of eight high school, community college, and university teachers with assisting in the design of the calculator.
The HP-38G, unlike most of HP's other calculators, uses infix notation rather than Reverse Polish notation. Given the calculator's intended userbase of high school maths and science teachers and students, this is not surprising. The calculator is programmable, supporting small, interactive applications called "aplets".
Additional information:
Read the Hewlett-Packard Journal's June 1996 article, "A Graphing Calculator for Mathematics and Science Classes." (PDF, 151KB)