"The TOPS-10 System (Timesharing / Total OPerating System) was a computer operating system from Digital Equipment Corporation (DEC) for the PDP-10 (or DECsystem-10) mainframe computer launched in 1967. TOPS-10 evolved from the earlier \"Monitor\" software for the PDP-6 and -10 computers; this was renamed TOPS-10 in 1970."@en . . . . . . "Discontinued" . . "TOPS-10"@en . . "7.04" . . .