The two main groups of software program are application software program as well as system software application. The most typical type of software, application software is a computer system software program bundle that does a particular function for a user, or in some instances, for an additional application. System software http://ifi.edu.vn/index.php?language=vi&nv=users&nvvithemever=t&nv_redirect=aHR0cHM6Ly9zb2Z0d2FyZS10b29sLmNvbQ