From Cave Paintings to the Internet A Chronological and Thematic Database on the History of Information and Media The First Hand-Held Electronic Calculator (1967)

Texas Instruments files the patent for the first hand-held electronic calculator, invented by Jack S. Kilby, Jerry Merryman, and Jim Van Tassel. The patent (Number 3,819,921) was awarded on June 25, 1974.

This miniature calculator employed a large-scale integrated semiconductor array containing the equivalent of thousands of discrete semiconductor devices.