Functions Of Operating System

1. Memory Management
2. Device Management
3. File Management
4. Input/Output Management
5. Processor Management
6. Maintenance Of System Clock & Date
7. Security

MEMORY MANAGEMENT :-

• Keep the track of primary memory.
• Allocates memory when process makes the request.
• Deallocates the memory when the process is terminated or no longer needs the memory.

DEVICE MANAGEMENT :-

• OS keeps the track of all the devices like input devices, output devices or secondary devices.
• Allocates and deallocates the device in efficient manner.
• OS decides when which process gets the device and for how much time

FILE MANAGEMENT :-

• Keeps the track of all the devices like its location use and status.
• Os decides which file will get the resources.
• Allocates and deallocates the resources.

INPUT/OUTPUT MANAGEMENT :-

• OS decides when and whom t gives the instructions entered by the input device.
• It decides when and whom to gives the instructions entered by the output device.

PROCESS MANAGEMENT :-

• It decides which process gets the processor and fr how much time.
• It allocates and deallocates the processor.

MAINTENANCE OF SYSTEM CLOCK & DATE :-

• System clock, date and calendar are also maintained by the processor.

SECURITY :-

• By means of passwords or any other security techniques, OS blocks unauthorized access to program and data.