The ZUSE Computers

In 1949, Zuse started his company ZUSE KG (at Hiinfeld in Hessen). The Z22 was his first computer with vacuum tubes (1955), followed by the Z23 with transistors. A small number of German universities was able to 

The larger model, the G2, with 30 operations per second and a magnetic drum storage of 2048 words at (50 + 1) bits fixed point, went into operation in the fall of 1954 in Gottingen, two years before the main German competitor PERM in Miinchen. 

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