A very basic introduction Operating Systems A very basic introduction
Operating Systems Definition: A special computer “program” Manages the relationship between application software, wide variety of hardware and the user of the system
Kernel The lowest level of any OS Loaded into computer memory when a system boots, or starts up Provides access to various common core service to all other system and application programs The service includes Disk access Memory management Task scheduling Access to other hardware devices contains “device drivers”
Some utilities Besides the Kernel, OS can have some utility programs to managing files and configurations OS also can provides programs to display and manage a graphical interface. Sometimes, OS also can be distributed with more auxiliary utility programs which are not related to the core function of the system (ex. MSN messenger)