Operating Systems

Operating Systems

1. A collection of programs that manages the hardware and software of a computer systems including sharing the computers time, memory, hardware and other resource.

2. File Management

   • Creates a file system to organise files and directories .
     • Hierarchy of Directories

3. Hardware Mangement

   • Manages peripherals - opens, closes and writes to peripheral devices such as storage attached to the computer .
   • Manages memory - transfers programs into and out of memory, allocates free space between programs, and keeps track of memory usage
   • Drivers - software that is used by the OS to control the device

4. User Management

   • provides a user interface an environment for the user to interact with the machine
     • Command Line
     • Touch Sensitive
     • Menu
     • Voice / Sound
     • GUI

5. Process Management

   • manages the CPU - runs applications and executes and cancels processes
   • multi-tasks - allows multiple applications to run at the same time

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