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Von Neumann architecture shares memory for code and data

Question asked:

“In a Von Neumann computer architecture, both executable instructions and program data reside in the exact same unified memory space without physical distinction.”
True
Confidence: High Checked on September 21, 2026

Summary

In von Neumann computers, instructions and data are stored together in a single main memory, with no separate physical memory for each. The architecture uses a common bus to fetch both, meaning the memory space is unified for code and data.

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Sources 60 searched

sciencedirect.com
  • Von Neumann Architecture - an overview | ScienceDirect Topics

    Von Neumann Architecture refers ... a control unit, and a memory to store data and instructions. The architecture allows for the execution of instructions and data operations, although not simultaneously, as they share a common bus....

  • Von Neumann Machine - an overview | ScienceDirect Topics

    The von Neumann architecture—the fundamental architecture upon which nearly all digital computers have been based—has a number of characteristics that have had an immense impact on the most popular programming languages. These characteristics include a single, centralized control, housed in the central processing unit, and a separate storage area, primary memory, which can contain both instructions and data. The instructions are executed by the CPU, and so they must be brought into the CPU from the primary memory.

engineering.purdue.edu
  • V on Neumann Computers Rudolf Eigenmann Da vid J. Lilja Purdue Univ ersit y

    Neumann · computer · arc · hitecture · is · the · Cen · tral · Pro · cessing · Unit · (CPU), con- sisting · of · the · con · trol · unit · and · the · ALU · (Arithmetic · and · Logic · Unit). The · CPU · in · teracts · with · a · memory · and · an · input/output · (I/O) subsystem · and · executes · a · stream · of · instructions ·

textbooks.cs.ksu.edu
  • Von Neumann Architecture :: Intro CS Textbook

    And in von Neumann architecture, a very simplistic view of a computer looks like this diagram. We need to have Some sort of an input device where we can collect data and input from the user. We have a central processing unit that contains a control unit that keeps track of the instructions we’re executing, and an arithmetic and logic unit that actually performs the calculation.

zoo.cs.yale.edu
  • CS 201 - Fall 2018.

    The "Von Neumann architecture", in which the instructions of a program and the data for the program are both located in the same (main) memory, is generally contrasted with the "Harvard architecture", in which there are separate memories for the instructions of a program and its data.

bbc.co.uk
en.wikipedia.org
  • Von Neumann architecture - Wikipedia

    On a large scale, the ability to treat instructions as data is what makes assemblers, compilers, linkers, loaders, and other automated programming tools possible. It makes "programs that write programs" possible. This has made a sophisticated self-hosting computing ecosystem flourish around von Neumann architecture machines. Some high-level languages leverage the von Neumann architecture by providing an abstract, machine-independent way to manipulate executable ...

geeksforgeeks.org
  • Von Neumann Architecture - GeeksforGeeks

    In Von Neumann architecture, a single bus is shared for both data and instructions, which can create a bottleneck (known as the Von Neumann bottleneck). I/O Interface: Connects the CPU and memory to input/output devices.

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