Von Neumann architecture

Computer architecture where code and data share a common bus

The von Neumann architecture—also known as the von Neumann model or Princeton architecture—is a computer architecture based on the First Draft of a Report on the EDVAC, written by John von Neumann in 1945, describing designs by John Mauchly and J. Presper Eckert at the University of Pennsylvania's Moore School of Electrical Engineering. The document describes a design architecture for an electronic digital computer made of "organs" that were later understood to have these components: A central arithmetic unit to perform arithmetic operations; A central control unit to sequence operations performed by the machine; Memory that stores data and instructions; An "outside recording medium" to store input to and output from the machine; Input and output mechanisms to transfer data between the memory and the outside recording medium. The attribution of the invention of the architecture to von Neumann is incorrect.

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