Livejar

Operating systems Common features Process management Interrupts Memory management File system Device drivers Networking (TCP/IP, UDP) Security (Process/Memory protection) I/O An operating system ( OS ) is a set of software that manages computer hardware resources and provides common services for computer programs . The operating system is a vital component of the system software in a computer system. Application programs require an operating system to function. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting for cost allocation of processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation , the operating system acts as an intermediary between programs and the computer hardware, [ 1 ] [ 2 ] although the application code is usually executed directly by the hardware and will frequently make a system call to an O...