☆ understand the basic function of operating system;
☆ be familiar with the different types of operating systems;
☆ identify some operating systems,such as Windows 10,Linux,etc.;
☆ apply your knowledge when using your operating system. jzTLjvZ4BJ4U9NnNerF8A6+76FXkcEVlBbPrDN25jLO+DpPyRdKMRZ+ci/cR2syV