IBM launched the IBM Personal Computer in 1981.
The machine, commonly called the IBM PC or Model 5150, was introduced on August 12, 1981. IBM developed it in Boca Raton, Florida, using commercially available components and an open architecture that differed from the company’s traditional mainframe approach.
The IBM PC used an Intel 8088 processor and initially ran IBM PC DOS, developed by Microsoft. Its technical design allowed outside companies to produce compatible hardware and software, helping establish the PC-compatible standard that dominated business computing.
A common mix-up is confusing IBM with Microsoft: IBM made and sold the computer, while Microsoft supplied the operating system. The IBM PC was not the first personal computer, but its business credibility and open design made it especially influential.