Konrad Zuse. Biography. Contributions. Zuse-Companies. Z3r. Tour-Zuse-Computer. Z23 Crosses Altlantic. Early Computers. Neumann vs Konrad Zuse. Impressum and Contact. Professor Dr.-Ing. habil. Horst Zuse

Z11


First machine of the Zuse KG in serial production. Manufactured in Neukirchen Kreis Huenfeld.



In 1955 it was a machine with relays and stepwise relays. The programs for the consolidation of farming were implemented by the hardware (stepwise relays).


Later, from 1957, the Z11 was freely programmable by punchtapes.


It was a very successful machine and was sold 48 times. And was the financial base for the development of the Z22.



Z11 (German)



Zuse-Computer (German)


Z1.

Goto the Z22 ...

Name of Machine
Z11 (1955-61)
Implementation
Realys and stepwise relays.
Frequency
10-20 Hertz, mechanically
Arithmetic Unit
Floating point arithmetic, 27 bits word length incl. Mantissa and expoent.
Average calculation Speed
Input
Punchtape (from 1957) and decimal numbers.
Output
Decimal numbers
Word Length
27 bits
Elements
654 relays and 28 stepwise relays.
Memory
Relays, ca. 20 numbers.
Power Consumption
2000W
Weight
800KG
Area of Application
Consolidation of farming, optical industry, insurance companies
Sold
48 pieces.
Costs
120.000 DM
Links
Zuse-Computer (English)
 Zuse-Computer (German)
 Konrad Zuses Work on a DVD
Cpmments
First in a serie produced computer in Germany. In 1957 followed the freely programming facility via a punch tape. Before this time the formulas were programmed by the hardware via stepwise relays.