IAS architecture computers

first electronic computer to be built at the Institute for Advanced Study

early computer

vacuum tube computer

thumb|200px|right|Johnniac computer, Computer History Museum, California The JOHNNIAC was an early computer built in 1953 by the RAND Corporation (not Remington Rand, maker of the contemporaneous UNIVAC I computer) and based on the von Neumann architecture that had been pioneered on the IAS machine. It was named in honor of von Neumann, short for John von Neumann Numerical Integrator and Automatic Computer.

thumb|Section of WEIZAC on display (2007). WEIZAC (Weizmann Automatic Computer) was the first computer in Israel, and one of the first large-scale, stored-program, electronic computers in the world.

thumb|DASK in :da:Danmarks Tekniske Museum|Danmarks Tekniske Museum. The DASK was the first computer in Denmark. It was commissioned in 1955, designed and constructed by Regnecentralen, and began operation in September 1957. DASK is an acronym for Dansk Aritmetisk Sekvens Kalkulator or Danish Arithmetic Sequence Calculator. Regnecentralen almost did not allow the name, as the word dask means "slap" in Danish. In the end, however, it was named so as it fit the pattern of the name BESK, the Swedish computer which provided the initial architecture for DASK.

ORDVAC|thumb

right|300px right|thumb|SILLIAC being serviced by Peter Aplin of Sydney University

thumb|BESK control panel thumb|Drum memory (bottom) and core memory (upper right) for the BESK computer