* Prime Computer PRIMOS* RAND JOSS → JOSS-2 → JOSS-3* RCA TSOS → Univac / Unisys VMOS → VS/9* Service in Informatics and Analysis (SIA), on CDC 6600 Kronos.
* Prime Computer PRIMOS* RAND JOSS → JOSS-2 → JOSS-3* RCA TSOS → Univac / Unisys VMOS → VS/9* Service in Informatics and Analysis (SIA), on CDC 6600 Kronos.