BARK ("Binär Aritmetisk Relä-Kalkylator", Swedish for "Binary Arithmetic Relay Calculator") was an early electromechanical computer. BARK was built using standard
phone relays, implementing a 32-bitbinary machine and could perform addition in 150 ms and multiplication in 250 ms. It had a memory with 50 registers and 100 constants. It was later expanded to double the memory. Howard Aikenstated in reference to BARK "This is the first computer I have seen outside Harvard that actually works."
BARK was developed by
Matematikmaskinnämnena few years before BESK. The machine was built with 8000 standard phone relays, 80 km of cable and with 175,000 soldering points. It was completed in February 1950 at a cost of 400.000 Swedish kronor, became operational on April 28, and was taken offline on September 22 1954. The engineers on the team led by Conny Palmwere Harry Freese, Gösta Neovius, Olle Karlqvist, Carl-Erik Fröberg, G. Kellberg, Björn Lind, Arne Lindberger, P. Peterssonand M. Wallmark.
* [http://www.treinno.se/pers/okq/index.htm Tekn. lic. Olle Karlqvist in memoriam] , memorial site of one of the engineers behind BARK and BESK
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