Konrad Zuse builds the Z1

1938
Konrad Zuse builds the Z1

In 1938, Konrad Zuse completes construction of the Z1, a mechanical computer.

Zuse started designing the Z1 in 1935, and built the machine in the living room of his parents' Berlin apartment.

The device was a purely mechanical, programmable, binary calculator. It used the movement of rods and metal plates to represent 1s and 0s. Instructions were read from punched tape.

Despite being mechanical, the Z1 contained many of the features of a modern computer, including binary floating-point arithmetic, boolean logic, and a control unit.

The Z1 was destroyed by the bombing of Berlin in December 1943, during World War II.

A reproduction of the Z1, constructed during the 1980s, can be found in the Deutsches Technikmuseum Berlin.

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