In pictures: The unsung women of technology

Sure, you've heard of Ada Lovelace and Grace Hopper. But how about Frances Allen, Deborah Estrin or Radia Perlman?

Jean E. Sammet: Cobol pioneer

Jean E. Sammet, who graduated from the University of Illinois with an M.A. in mathematics, was a key member, along with Grace Hopper, of the committee that developed Cobol in the late 1950s and early 1960s while working for Sylvania. In 1961, Sammet began working at IBM. There she developed the FORmula MAnipulation Compiler, or FORMAC, the first widely used computer language used for manipulating mathematical formulas.

Sammet went on to author Programming Languages: History and Fundamentals in 1969. Her work on programming languages set the foundation for future computer scientists to build upon.

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