Mainframes (often colloquially referred to as Big Iron) are computers used mainly by government institutions and large companies for mission critical applications, typically bulk data processing such as census, industry/consumer statistics, ERP, and financial transaction processing. The term originated during the early 1970s with the introduction of smaller, less complex computers such as the DEC PDP-8 and PDP-11 series, which became known as minicomputers (also referred to simply as minis). The industry/users then coined the term "mainframe" to describe larger, earlier types (previously known simply as "computers").
From the 1950's until the mid-1970's, Honeywell was the United States importer of Pentax cameras and photographic equipment. These products were labeled in the U.S. Honeywell Pentax. From 1961 to 1978 the company expanded into such fields as defense, aerospace, computers and cameras. Honeywell originally entered the computer business via a joint venture with Raytheon called Datamatic Corp., but soon bought out Raytheon's share and the business became a Honeywell division. It also purchased minicomputer pioneer Computer Control Corporation, renaming it as Honeywell's Computer Control Division. Through most of the 1960s, Honeywell was one of the "Snow White and the Seven Dwarfs" of computing. IBM was "Snow White," while the dwarfs, in addition to Honeywell, inclu