The EDSAC was the world's first stored-program computer to operate a regular computing service. Designed and built at Cambridge University, England, the EDSAC performed its first calculation on 6th May 1949.
The Edsac simulator is a faithful software evocation of the EDSAC computer as it existed in 1949-51. The user interface has all the controls and displays of the original machine, and the system includes a library of original programs, subroutines, and debugging software. The simulator is intended for use in teaching the history of computing; as a tutorial introduction to the classic "von Neumann" computer; or as an historical experience for current computer practitioners.
The screen shot below shows the simulator running the "squares" program, one of the first three programs written for the EDSAC.
Copyright, 1996-2003
The EDSAC Simulator is developed by:
Martin Campbell-Kelly ,
Department of Computer Science ,
University of Warwick , England.
Photographs copyright
Cambridge University Computer Laboratory .