OPERATING SYSTEM DEFINITION o Os is a resource allocator ·Manages all resources Decides between conflicting requests for efficient and fair resource use o OS is a control program Controls execution of programs to prevent errors and improper use of the computerOPERATING SYSTEM DEFINITION  OS is a resource allocator  Manages all resources  Decides between conflicting requests for efficient and fair resource use  OS is a control program  Controls execution of programs to prevent errors and improper use of the computer