ILLIAC - Architectural Blueprint

Architectural Blueprint

The architecture for the first two UIUC computers was taken from a technical report from a committee at the Institute for Advanced Study (IAS) at Princeton, First Draft of a Report on the EDVAC , edited by John von Neumann (but with ideas from Eckert & Mauchley and many others.) The designs in this report were not tested at Princeton until a later machine, JOHNNIAC, was completed in 1953. However, the technical report was a major influence on computing in the 1950s, and was used as a blueprint for many other computers, including two at the University of Illinois, which were both completed before Princeton finished Johnniac. The University of Illinois was the only institution to build two instances of the IAS machine. In fairness, several of the other universities, including Princeton, invented new technology (new types of memory or I/O devices) during the construction of their computers, which delayed those projects.