Structure of the operating system

유저 프로그램 - User Program

하드웨어 - Hardware

 

Structure of an Operating System

• GUI (Graphical User Interface)
  • A type of user interface that allows users to interact with electronic devices visually.
• System Call_시스템콜
  • The interface for accessing the kernel of the operating system.
  • Switches from user mode to kernel mode through a system call.
  • Prevents direct access to computer resources and protects programs.
  • Uses a mode bit flag variable (0 = kernel mode, 1 = user mode).
• Kernel_커널
  • The core part of the operating system that manages and controls the entire system.
  • Communicates directly with hardware and resides in memory as the lifeline of the operating system.
  • Provides the system call interface.
  • Responsible for security, memory management, process scheduling, file systems, and I/O device management.
• Driver_드라이버
  • Software used to control and operate hardware devices.