User:ThisIsNotABetter/IBM minicomputers

IBM early systems

 * IBM 701 (1952)
 * IBM 650 (1954)

IBM scientific and automatization minicomputers

 * IBM 1620 (1959)
 * IBM 1710, IBM 1720
 * IBM 7700 (1963)
 * IBM 1130 (1965)
 * IBM 1800, IBM 1500
 * IBM System/7 (1971)
 * IBM Series/1 (1976)
 * IBM RS/6000 (1990) - was a more "servers" systems, instead of "minicomputers"; was replaced by the IBM Power Systems in April 2008.

IBM office system
Was suceed by microcomputer-based IBM Displaywriter System.
 * IBM Office System/6 (1971)


 * IBM 1030 Data Collection System (1963)
 * IBM 3740 Data Entry System (1973)

IBM Midrange Systems
Successors of IBM tabulating machines and early small mainframes.


 * IBM 1400 (1959)
 * System/3 was the first of the IBM midrange systems (1969)
 * System/32 (introduced in 1975) was a 16-bit single-user system also known as the IBM 5320.
 * System/34 (1977) was intended as successor to both the 3 and the 32.
 * System/38 (1979) was the first Midrange system to have an integrated relational database management system (DBMS). The S/38 had 48-bit addressing, and ran the CPF operating system.
 * System/36 (1983) had two 16-bit processors with an operating system that supported multiprogramming.
 * AS/400 was introduced under that name in 1988, renamed eServer iSeries in 2000, and subsequently became IBM System i in 2006. It ran the OS/400 operating system.
 * IBM System i was subsequently replaced by the IBM Power Systems in April 2008.

IBM small mainframes

 * IBM System/360 low-end models (20, 25 and 30) (1964)
 * IBM System/370 compatible
 * IBM 4300 series (1079)
 * IBM 9370 (1986)
 * PC-based IBM mainframe-compatible systems (1983)
 * IBM System/390 compatible
 * IBM Multiprise series (1996)
 * PC-based IBM mainframe-compatible systems (1995)