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Layers of a Computing System
Chapter Goals
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Computer Components
Sizes in Perspective
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Stored-Program Concept
John von Neumann
Memory
Arithmetic/Logic Unit
John Vincent Atanasoff
Input/Output Units
Herman Hollerith
Control Unit
Flow of Information
The Fetch-Execute Cycle
Figure 5.3 The Fetch-Execute Cycle
RAM and ROM
Secondary Storage Devices
Magnetic Tape
Modern Tape Drives
Magnetic Disks
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Compact Disks
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Touch Screens
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Synchronous processing
Pipelining
Independent Processing with Shared Memory
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Author: Vincent Costa
E-mail: vcosta@optonline.net