LearnITWithMrC

Computer Architecture

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I need to learn how to explain the Von Neumann architecture.

Key Terms

Computer architecture CPU (Central Processing Unit) Motherboard RAM (Random Access Memory) Northbridge Southbridge Graphics card GPU (Graphics Processing Unit) Heat sink Fan BIOS (Basic Input/Output System) Primary storage Secondary storage Input/Output devices Buses Clock speed Megahertz (MHz) Gigahertz (GHz)

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Von Neumann Architecture

The Von Neumann architecture was created by John von Neumann in 1945. A computer architecture is not an actual computer but the idea of how a computer could be built.

The Von Neumann architecture is a design that consists of a Control Unit, Arithmetic and Logic Unit (ALU), Memory Unit, Registers and Inputs/Outputs.

The Von Neumann architecture is based upon the stored-program computer concept. This is where the instruction data and the program data are both stored in the same memory. This architecture is still used in most modern computers.

The advantage of the Von Neumann Architecture is that is simplifies the design of a Micro controller chip.Von Neumann Micro controllers use RAM for both data storage and program instruction storage.

The disadvantages of the Von Neumann Architecture is that there is only one Bus to connect the memory to the processor, so only one instruction or piece of data can be fetched at a time.