EDVAC

The Electronic Discrete Variable Automatic Computer, or EDVAC is one of J. Presper Eckert and John W. Mauchly (both from the ENIAC group) constructed computer from the late 40s. The key innovation of the EDVAC over previous computing machines such as the ENIAC or the ASCC was to treat the instructions of the program as the data to be processed, they encode binary and process in the internal memory. This concept is now called the Von Neumann architecture and was first described in an internal paper during the development of the EDVAC by John von Neumann ( " First Draft of a Report on the EDVAC "). It enabled over programs on an external tape a much faster processing.

The EDVAC was until 1960 still under development. Finally, it was possible to operate it reliably up to 20 hours per day.

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