Just as a nation's flag expresses the distinct identity of a country, so, too, a logotype — typically a symbol or letters — helps to establish the name and define the character of a corporation. Effective logos become synonymous with the organizations they portray. They are instantly recognized by millions of people, and help to identify their companies and convey a message about the brands for which they stand.
Down through the years, IBM (and its predecessor companies) has used a series of logos on signs, stationery, vehicles, products — and even flags — to make a distinctive statement and foster immediate recognition all over the world. Here are those logos.