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The Relay Calculator Z4
July-September 1980 (vol. 2 no. 3)
pp. 242-245

The relay calculator Z4 was designed by Konrad Zuse in Berlin during the last years of World War II. It occupies a unique place in the family of early digital computers. Some of the outstanding characteristics of the Z4 were use of the binary system with floating point, mechanical 2048-bit memory, and provision for intermediate data storage on punched tape.

Citation:
A.P. Speiser, "The Relay Calculator Z4," IEEE Annals of the History of Computing, vol. 2, no. 3, pp. 242-245, July-Sept. 1980, doi:10.1109/MAHC.1980.10026
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