Operating System

Operating System

1. Managing The CPU

   • Processes:
     • The program is found on the storage drive
     • a section of RAM is reserved for the program and space is allocated for the programs data
     • the program code is copied from the storage into the reserved space in the memory
     • the CPU program counter is set to the memory location of the first instruction in the program, and execution begins

2. User Interface

   • graphical user interface (GUI)
     • tiles, icons and menus
     • user can interact with images through:
       • keyboard
       • touchscreen
       • mouse
   • command line interface
     • faster
     • it is more flexible
     • it uses less memory
     • text only
       • non graphical
   • allows user to interact with the machine