Roles of operating system

• What role does the operating systems do ?

  Manage RAM and input and output devices
• How does an operating system manage RAM in its role ?

  Ensures data is stored correctly
• How doe an operating system manage input/output devices in its role ?

  sends data to output and receives data from input
• How does an operating system provide user interface ?

  folder and file system is manipulated which can allow copying or deleting data