System/2 or PS/2 is IBM's second generation of personal computers. Released in 1987, it officially replaced the IBM PC, XT, AT, and PC Convertible in IBM's lineup
System/2 or PS/2 was a line of personal computers developed by International Business Machines Corporation (IBM). Released in 1987, the PS/2 represented
The PS/1 (known in some European countries as the PS/1000: 95 ) is a brand for a line of personal computers that marked IBM's return to the home market
System/55 (パーソナルシステム/55) or PS/55 is a personal computer series released from IBM Japan in 1987. The PS/55 is the successor to IBM 5550 (Multistation 5550)
OS/2 (Operating System/2) is a series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer