description George Stibitz Overview
George Robert Stibitz was an American mathematician and physicist who pioneered digital computing while working at Bell Labs in the 1930s and 1940s. In 1937, he constructed the Model K, an electromechanical relay-based binary adder built on his kitchen table. This work led to the creation of the Complex Number Calculator, which he famously demonstrated via a remote teletype connection in 1940. His innovations established foundational concepts for subsequent digital computer architecture.
help George Stibitz FAQ
What was George Stibitz's Model K?
The Model K was a one-bit electromechanical binary adder that George Stibitz built at Bell Labs in November 1937. It used relays, switches, batteries, and light bulbs to demonstrate binary addition. [Model K](https://en.wikipedia.org/wiki/Model_K_%28calculator%29)
Why was George Stibitz's machine called Model K?
The K referred to the kitchen table where Stibitz assembled the prototype. The machine was built from simple relay parts rather than from a large purpose-built computer cabinet.
How did the Model K lead to later Bell Labs computers?
The relay logic demonstrated by the Model K helped lead to Bell Labs' Complex Number Calculator. That larger machine was completed in 1939 and entered operation in 1940.
Was the Model K an electronic computer?
It was electromechanical, not an electronic vacuum-tube computer. Its relays represented the on and off states of binary arithmetic, making it an important early digital-computing experiment.
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