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Foundations of ComputingPresentation : 

Foundations of ComputingPresentation Tom O Regan 20024937 John Mc Donald 20039253

Introduction : 

Introduction What is the CPU Von Neumann Architecture Fetch & Execute

The CPU : 

The CPU

The CPU : 

The CPU Control Unit Registers ALU Buses RAM Control Unit Registers ALU

CPU Diagram : 

CPU Diagram

Von Neumann Model : 

Von Neumann Model

Von Neumann Architecture : 

Von Neumann Architecture

North/South Bridge : 

North/South Bridge

Fetch & Execute : 

Fetch & Execute

Basic Algorithm : 

Basic Algorithm

A Program loads the request Add 2 + 5 into the PC’s RAM : 

A Program loads the request Add 2 + 5 into the PC’s RAM

CPU Fetches the Instruction from Memory : 

CPU Fetches the Instruction from Memory

This is placed in the Instruction Register : 

This is placed in the Instruction Register

Instruction de-coded and Executed loading 2 into Accumulator : 

Instruction de-coded and Executed loading 2 into Accumulator

Counter Increments and Points to next Instruction : 

Counter Increments and Points to next Instruction

CPU Fetches the Next Instruction from Memory : 

CPU Fetches the Next Instruction from Memory

Instruction De-Coded and Executed to Load 5 into Accumulator : 

Instruction De-Coded and Executed to Load 5 into Accumulator

Instruction & Data Loaded : 

Instruction & Data Loaded

Task Executed adding 2 plus 5 to give 7 : 

Task Executed adding 2 plus 5 to give 7

Counter is Incremented : 

Counter is Incremented

CPU Fetches next Instruction from Memory : 

CPU Fetches next Instruction from Memory

Instruction is Decoded & Executed Result is Stored in Memory : 

Instruction is Decoded & Executed Result is Stored in Memory

Finish Cycle. Sum Completed. : 

Finish Cycle. Sum Completed.

Conclusion : 

Conclusion Introduced you to the CPU and its 5 major components Displayed the Von Neumann model Architecture Explained North Bridge / South Bridge Showed how Fetch and Execute works to carry out a calculation.

References : 

References Null,L. Lobur,J. (2006) The essentials of Computer Organisation and Architecture. USA: Jones & Bartlett Publications Inc. Background image http://www.corbisimages.com/images http://www.eee.deu.edu.tr Images http://fctech.blogspot.com http://www.research.utoronto.ca http://www.eee.deu.edu.tr

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