The IBM PC, Part 1: Arrival

# Summary In the early 1980s, the personal computer market was highly fragmented, with competing manufacturers like Apple, Commodore, Atari, and Radio Shack each supporting incompatible hardware and software standards. IBM, which dominated the mainframe computer market with 40% of the global computer market share, entered the personal computer space with Project Chess, launching the IBM Personal Computer in 1981. Over the following decade, the IBM PC and its compatibles would standardize the industry, replacing the diverse ecosystem of mutually incompatible machines with a largely uniform market.