Operating Systems oS control /o device g Main functions: u Send commands to the devices E Catch interrupts H Handle errors Provide an interface between the devices and the rest of the system that IS simple and easy to use e Device independence Gao Haichang, Software School, Xidian UniversityOperating Systems Gao Haichang , Software School, Xidian University 4 OS control I/O device  Main functions:  Send commands to the devices  Catch interrupts  Handle errors  Provide an interface between the devices and the rest of the system that is simple and easy to use  Device independence