System/390 is a series of IBM mainframe models. Successor to the System/370s, and more specifically the System 370/ESAs[?]. Rebranded as zSeries.
... great explorers (in alphabetic order by surname): Table of contents 1 A 2 B 3 C 4 D 5 E 6 F 7 G 8 H 9 I 10 J 11 L 12 M 13 N 14 ...