User View Vs Hardware View Vs System View of Operating System

User View of Operating System:
The Operating System is an interface, hides the details which must be performed and present a virtual machine to the user that makes it easier to use. Operating System provides the following services to the user. 

• Execution of a program
• Access to I/O devices
• Controlled access to files
• Error detection (Hardware failures, and software errors)

Hardware View of Operating System:
The Operating System manages the resources efficiently in order to offer the services to the user programs. Operating System acts as a resource manager: 

• Allocation of resources
• Controlling the execution of a program
• Control the operations of I/O devices
• Protection of resources
• Monitors the data

System View of Operating System:
Operating System is a program that functions in the same way as other programs. It is a set of instructions that are executed by the processor. Operating System acts as a program to perform the following. 

• Hardware upgrades
• New services
• Fixes the issues of resources
• Controls the user and hardware operations

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