1The IBM Mainframe: 50 Years of Big Iron Innovation
2IBM 701 (1952)
Initially built for the U.S. Department of Defense. The first production machine shipped from Poughkeepsie, N.Y., to the IBM Technical Computing Bureau at World Headquarters in New York City on Dec. 31, 1952.
3IBM 702 (1955)
The IBM 702 Data Processing System was announced in 1953 and delivered in 1955.
4IBM 704 (1954)
The IBM 704 Data Processing System of 1954 was a large-scale computer designed for engineering and scientific calculations.
5IBM 705 (mid-1950s)
The IBM 705 Data Processing System was one of the most powerful data processing systems of the mid-1950s.
6IBM 1401 (1959)
The all-transistor IBM 1401 Data Processing System was introduced in 1959 and remained an IBM offering for 12 years.
7IBM 1400 (1962)
The IBM 1440 Data Processing System of 1962 was a low-cost system specifically designed to solve the data processing needs of smaller businesses.
8IBM 3031 (1977)
The IBM 3031 Processor Complex was introduced in 1977 to provide higher levels of performance to users of intermediate and large computers.
9IBM 3032 (1977)
Introduced in 1977, the IBM 3032 Processor Complex included a dual-display console that enhanced the system’s availability.
10IBM 3083 (1982)
Announced in 1982, the IBM 3083 Processor Complex provided up to 32 megabytes of storage.
11IBM 3090 (1985)
Introduced in 1985, the IBM 3090 Processor Complex contained four central processors and 128 megabytes of storage.
Back in 1959, the IBM 7090 Data Processing System was the most powerful computer in IBM’s lineup.
13Enterprise System/9000 (1990)
The Model 900 (center) was in 1990 the largest computer in IBM’s new ES/9000 family of processors.
14System/360 Model 25 (1968)
The IBM System/360 Model 25 was announced in 1968.
15System/370 Model 158 (1972)
Announced in 1972, the IBM System/370 Model 158 was a medium-sized, high-performance data processing system that incorporated monolithic main storage, virtual storage capability, integrated storage controls and a display console.
16System/370 Model 165 (1970)
The IBM System/370 Model 165 of 1970 was designed to handle large databases, remote computing and high throughput multiprogramming.
The IBM System/390 line of servers was the IBM flagship mainframe family in the 1990s.
18System/390 Parallel Enterprise Server (1994)
The IBM S/390 Parallel Enterprise Servers were microprocessor-based mainframes designed for any business application.
19eServer zSeries 900 (2000)
The IBM zSeries 900 was the first IBM mainframe built from scratch with e-business as its primary function, announced in 2000.
20eServer zSeries 990 (2003)
The IBM z990 was introduced in May 2003 as “the world’s most sophisticated server.”
21IBM z10 Business Class mainframe (2008)
The IBM z10 Business Class mainframe is the latest line of IBM mainframes. The z10 Enterprise Class (EC) was announced on Feb. 26, 2008. On Oct. 21, 2008, IBM announced the z10 Business Class (BC), a scaled-down version of the z10 EC.