The Z3 was a German electromechanical computer designed by Konrad Zuse in 1938, and completed in 1941. It was the world's first working programmable, fully automatic digital computer.[3] The Z3 was built with 2,600 relays, implementing a 22-bit word length that operated at a clock frequency of about 5–10 Hz.[1] Program code was stored on punched film. Initial values were entered manually.[4][5][6]: 32–37 

The Z3 was completed in Berlin in 1941.

https://en.wikipedia.org/wiki/Z3_(computer)