An operating system (OS) provides services to programs and users of a computer. These services include things like managing hardware resources, providing a user interface, and managing system memory.
Some of the common services provided by an operating system include:
Memory management: The OS manages the allocation and deallocation of system memory to programs and processes, ensuring that each program has the memory it needs to function and preventing programs from accessing memory they shouldn't.
Process management: The OS is responsible for creating and managing processes, which are the individual instances of programs running on a computer. The OS determines how much CPU time each process gets, and when a process finishes running, the OS frees up any resources the process was using.
File management: The OS is responsible for managing the files stored on a computer's hard drive or other storage devices. This includes creating, deleting, and modifying files, as well as managing file permissions and providing a file hierarchy for organizing files.
Device management: The OS manages the communication between the computer and its peripherals, such as printers, keyboards, and mice. The OS also manages input and output operations to and from devices such as hard drives and memory cards.
Network management: The OS also manages the communication over the network, whether it's a local area network or the internet. The OS coordinates the sending and receiving of data, managing connections, and enforcing security.
Security: The OS provides basic security services such as access control, and password protection, creating a secure environment to run applications and access files.
These are just a few examples of the many services that an operating system provides. The specific services offered by an operating system can vary depending on the OS and the specific version you're using.
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