Operating system.
Since the mid-1970s, computer operating systems have appeared. The 8-bit CP/M operating system developed by Digital Research Software Company was developed in USA 1976.
The system allows users to control and manage the system through the keyboard of the console, and its main function is to manage file information, so as to realize automatic access to other device files or hard disk files. Since then, some 8-bit operating systems mostly adopt CP/M structure.
1956 GM-NAI/O
1959 shared operating system
1960 IBSYS
196 1 year CTSS male chauvinistic idiot
GCOS 1962
1964 EXEC 8； OS/360； TOPS- 10
1965 multi-card; OS/360； tape operating system
1966 DOS/360； MS/8
1967 ACP； CP/CMS； ITS waiting
1969 TENEX； Unix operating system
1970 DOS/ batch11(PDP-11)
197 1 year operating system /8
1972 MFT； MVT； RDOS； SVS； Virtual machine/content management system
1973 alto OS; RSX- 1 1D； RT- 1 1； VME
1974 MVS
1975 BS2000
1976 CP/M； top-20
1978 apple dos 3.1; TripOS virtual machine; Lisp machine
1979 POS； NLTSS
1980 OS-9； QDOSSOSXDE； Xenix
198 1 year MS-DOS
1982 brigadier general DOSSunOSUltrix
1983 Lisa OS； Coherence; Novell NetWareProDOS
1984 Macintosh operating system; MSX- dos; QNX； Younicos
1985 amigaos; Atari TOSMIPS OS oberon Operating System
1993 windows NT
200 1 year windows XP
Windows7 in 2009
20 10 window 8
20 14 window 10