Wateva
security,memory management and file management
Well, the most fundamental probably are:- processor management- memory management- file management- device management (in some OSes, devices are represented as files)what are the four functions that all operating systems provide?
Memory Management
An Operating System manages resources. Memory is one example of resource management.
Operating Systems work as a bridge between computer hardware and user that performs tasks/functions like memory management, time management, handling of input output devices etc. Some examples of operating systems are Linux, Ubuntu, windows etc.Major functions that are perform by Operating Systems areBootingProcess ManagementMemory ManagementData SecurityDisk ManagementDisc ControllingPrinting Handling etc.
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Kernel memory
The three main functions of an Operating System are process management, memory management and file management.
Role of the Memory management unit in Operating system Every program for its execution requires some space in computer memory which is provided by memory management unit using virtual memory that provides the external storage addressing location for the programs that does not have too much space in main memory for their execution and saved them in secondary memory but when required loaded them again in main memory. This deallocation and reallocation of programs in main memory deals with concurrency. At last, we say that loading capabilities of programs with the memory addressing is there in it.
32 bit operating systems can only address 4GB of memory 64 bit operating systems can address 4 petabytes of memory(1 048 576 gigabytes).
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poor performance