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History of IBM mainframes, 1952–present
Market name
700/7000 series 1400 series System/360 System/370 30XX series (303X, 308X, 3090) System/390 eServer zSeries (900, 800; 990, 890) System z9 System z10 zEnterprise System (z196, zEC12) IBM Z (z13, z14, z15, z16)
Architecture
System/360 System/370 S/370-XA ESA/370 ESA/390 z/Architecture
v t e

IBM mainframes are large computer systems produced by IBM since 1952. During the 1960s and 1970s, IBM dominated the computer market with the 7000 series and the later System/360, followed by the System/370. Current mainframe computers in IBM's line of business computers are developments of the basic design of the System/360.