ppt of features of operating system

1. Features Of Operating System

2. Overview Of Operating System The operating system uses a coding language to communicate with computers. It is a layer of the graphical user interface (GUI) that connects the user to the computer’s hardware. The operating system also manages a computer’s software and controls how programs are executed.  The operating system enables user interaction without requiring prior computer programming knowledge. No one can use smart phones or laptops without installing the operating system.

3. Features of Operating System Security Management Supervisor and Protected modes Resource Allocation Storage and Memory Management 5. Error Handling 6. File system manipulation 7. Program Execution 8. Protection of information and resources

4. 1. Security Management The operating system protects the private information kept in the system and blocks unauthorized access by providing the user with strong, authorized keys. This protects the system against malware attacks. 2. Supervisor and Protected modes On CPUs with this capability, there are two modes—protected mode and supervisor mode. The protected mode cannot be exited by a user application without an interrupt returning control to the kernel. As a result, the operating system can manage access to hardware and memory. The operating system uses supervisor mode for low-level tasks that necessitate complete access to the hardware.

5. 3. Resource Allocation This is one of the features of operating system that allows resources when a fragment of software requests them. The resources are de-allocated and given to other initiatives that are in need when a program comes to an end.  4. Storage and Memory Management OS performs memory management and virtual memory multitasking. The purpose of memory management in an operating system is to allocate and release memory space to processes as needed. If a process runs out of memory, alarms titled “file system and disc space are high or full” are generated. 

6. 5. Error Handling Errors in the operating system can happen at any time and anywhere. The operating system constantly looks for issues like printer paper shortages, connectivity issues, and power outages. In the worst-case scenario, the user is forced to log out, and the system shuts down due to the application’s error handling mechanisms. 6. File system manipulation A file is a storage device for the collection of related data. Computers can save files on discs for long-term archiving (secondary storage): magnetic discs and magnetic tape. The part of the operating system that controls files is the file system. It offers a way to access files’ contents, including data and programs, and save data.

7. 7. Program Execution The following list is an operating system’s main program management tasks. A program is loaded into memory when the operating system performs this command. The operating system executes the program and controls how it is run. The operating system provides a mechanism for process synchronization. The operating system provides a method for communication between processes. Finally, the operating system provides a method for addressing deadlocks.

8. 8.Protection of information and resources This includes safeguarding all information, software, and the operating system itself. Threats might come from human error, malicious software, unfriendly people, or flaws in the system. Data loss would be seriously at risk as a result of these attacks. Conclusion Operating systems are essential because they are in charge of everything from memory control and allocation to detecting input from external devices and transferring output to computer screens.  An operating system is a piece of software that manages a computer’s hardware and software resources while offering common services to computer programs. The three most widely used operating systems for IBM-compatible personal computers are Microsoft Windows, Linux, and Mac OS.