[OS]Operating System Overview

Operating System

• User Interface
  • CUI
  • GUI
  • EUCI
• Resource managenment
  • HW resource (processor, momory, etc.)
  • SW resource (file, application, etc.)
• Process and Thread management
• System mangaement

Operating System Structure

• Kernel
  • OS main part
    • System Management(processor, memory, etc)
  • Synonym
    • neucleus
    • supervisor
    • resident program
    • control program etc
• Utility

Operating System Features

• Process Management
• Processor Management
• Memory Management
• File Management
• I/O Management
• Others

Process Management

• Process
  • Executives registered in the kernel (running programs)
  • User request/program execution entity

Processor Management

• CPU
• Scheduling
• Assignment

Memory Management

• Main memory
• Multi-user, Multi-tasking system
• scheme

Others

• Disk
• Networking
• Security and Protection system
• Command interpreter system
• System call interface

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Reference

OS Overview