The 2 main classifications of software program are application software program and system software. The most usual kind of software, application software program is a computer software application package that carries out a certain feature for a customer, or in some cases, for an additional application. System software program rests http://tunghia2.edu.vn/index.php?language=vi&nv=news&nvvithemever=t&nv_redirect=aHR0cHM6Ly9zb2Z0d2FyZS10b29sLmNvbS8=