Sayed Ahmed

Ref: Internet, Google, Google Images.

Operating System Functionality Ref: https://www.geeksforgeeks.org/introduction-of-process-management/

Ref: •Ref: https://www.uow.edu.au/student/learning-co-op/technology-and-software/operating-systems/ •https://www.learncomputerscienceonline.com/operating-system/ •System Software: https://www.techtarget.com/whatis/definition/system-software

Ref: https://www.geeksforgeeks.org/difference-between-system-software-and-application-software/

Ref: Internet, Google, Google Images