Phan mem la cac chuong chinh cua may tinh . Co hai loai
+Phan mem he thong : la phan mem chuong trinh to chuc viec quan li , dieu phoi cac thiet bi cua may tinh sao cho chung hoat dong that nhip nhang va chinh xac
+Phan mem ung dung : la phan mem dap ung moi yeu cau ung dung cu the .
[phan nay minh thi rui duoc diem toi da do ,dung so sai]