Answer :
according to a cloudy history of time, Honeywell, ibm, and xerox the dominant companies in International Business Machines (IBM) industry in 1975
The multinational computer technology and IT consulting firm International Business Machines (IBM), also known as "Big Blue," has its headquarters in Armonk, New York, in the United States. The first companies to develop punch-card-based data tabulating machines and time clocks were the first to combine their efforts to automate routine business transactions, which led to the formation of IBM. The Computing-Tabulating-Recording Company (CTR) was formed when these businesses merged in 1911.
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