USA - 1972

First TI LED model - Red LED
4-AA Batteries.

"TI's first consumer product, this electronic hand-held calculator made everyday math quick and easy. The TI-2500 performed four arithmetic functions (addition, subtraction, multiplication and division) and had a red, eight-digit light-emitting diode (LED) display; it used an adapter to recharge the batteries. Announced in April 1972 with a suggested retail price (SRP) of $149.95, the price was reduced to $119.95 when the product was formally introduced on September 21, 1972.

Part of the permanent collection of the Smithsonian Institution in Washington, D.C."

Photo Source: Bruce Rogers - Calculator Collection Page
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TI Calculator History

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