Functions of operating systems

Functions of operating systems

1. manage the computers resources

   • •Sharing of I/O between many programs using the CPU.
     • •Handling "interrupts" generated by the I/O controllers.
     • •Hiding the complexities of hardware from the user.
     • •Managing between the hardware's resources which include the processors, memory, data storage and I/O devices

2. establish the users interface

   • issues simple error messages

3. provides services for applications software.

   • maintains security and access rights of users

4. Memory management

   • Deallocate the Memory from the Process

5. different modes

   • Real-time processing
     • Interactive processing
     • Multi-tasking
     • Multi-access or multi-user
   • Multi-programming
   • Batch processing

6. types of operating systems

   • linux
     • windows
     • apple
     • android

7. the definition of a operating system

   • the low-level software that supports a computer's basic functions, such as scheduling tasks and controlling peripherals.

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