George Stibitz was an inventor, recognized as the father of the modern digital computer in 1939 - National Inventors Hall of Fame.
First Electronic Digital Computer
In 1937, George Stibitz decided that the electromechanical relays that were the chief components in telephone switching systems could be used for another purpose.
Stibitz (1904 - 1995)
George Stibitz invented a Model K (the K standing Kitchen) digital calculator.
Robert Stibitz's Complex Number Calculator
In 1937, George Robert Stibitz, a scientist at Bell Laboratories, built a digital machine called the Model K, which was based on relays, flashlight bulbs, and metal strips cut from tin-cans.