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The Complex Number Calculator was finished
1939-1940 This calculator is finalized by Bell Telephone Laboratories and was designed by George Stibitz.
Today we all carry a calculator on our phones. -
The Z3 Computer finalized
The early computer was made by a German engineer named Konrad Fuse. The Z3 was used by the Germans for aerodynamic calculations. However, it was destroyed in 1943 on a bombing raid. It was later reconstructed in the 1960s. -
Bell Lab Model 2
Relay Interpolator was finished. This was an analog computer that help tested the M-9 guns. The US Army asked Bell Labs to help with this task. Then George Stibitz had the idea of using a relay-based calculator which resulted in the Bell Lab Model 11. -
Curta Calculator
The smallest calculator to be created at that time. This calculator was made by an Australian Curt Herzstark. He design it while he was in a concentration camp. -
Williams Tube-RAM first ran on a computer.
The developers were Frederic Williams, Tom Kilburn, and Geoff Toothill. They made the Small-Scale Experimental Machine also known as Manchester Baby. This was built to test memory technology. This was the first software program to run on a digital electronic stored-program computer.