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The first computer to incorporate many features now considered standard, including: a virtual (logical) address space larger than the actual (physical) address space; a one-level memory using core backed by drum; an architecture based on the assumption of a software operating system, with hardware features to assist the software. The design commenced in 1956 under Tom Kilburn at the University of Manchester, UK, and the project was supported from 1958 by Ferranti Ltd. The prototype was operating in 1961 and production models appeared in 1963. See also virtual machine.

Subjects: Computing.

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