Evolución los Sistemas Operativos. IBSYS CTSS EXEC EXEC OS/360 BATCH-11 (PDP-11) OS/8 MFT MVT RDOS SVS VM/CMS Alto BS2000 CP/M TOPS-20 Apple DOS 3.1 TripOS VMS Lisp Machine (CADR) POS NLTSS OS-9 QDOS SOS XDE (Tajo) (Xerox Development Environment) Xenix MS-DOS ...