The Z2 was a mechanical and relay computer created by Konrad Zuse in 1939. It was an improvement on the Z1, using the same mechanical memory but replacing the arithmetic and control logic with electrical relay circuits. Photographs and plans for the Z2 were destroyed by the Allied bombing during World War II. In contrast to the Z1, the Z2 used 16-bit fixed-point arithmetic instead of 22-bit floating point.
||Ca. 5 Hertz
||Fixed point arithmetic unit with 16 bit word length
|Average calculation Speed
||0.8 sec for addition operation
|Number of Relays
||64 words (same as Z1)
||300 kg (660 lb)