In the course of the 1970s, handheld electronic calculators transformed the way tens of millions of people did arithmetic. Engineers abandoned slide rules, business people gave up desktop calculating ...

Remove the outer casing on the Monroe PC-1421, a 1964 mechanical calculator, and this is what you’ll find. Courtesy of Kevin Twomey Mark Glusker had heard rumors about the mechanical calculator, a ...

Jerry Merryman, one of three people at Texas Instruments credited with inventing the world’s first handheld electronic calculator in the 1960s, died at a Dallas hospital on February 27. Merryman was ...