The original IBM 5150 with peripherals

The IBM 5150 in the office

The father of the PC

Marketing the dawn of the PC era

Rapid development stoked by competitive fears

IBM partners with Microsoft

Microsoft sells its operating system to the masses

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The original IBM 5150, the personal computer that helped launch an industry, made its debut at a press conference at the Waldorf Astoria Hotel in New York on August 12, 1981.

Caption by Jay Greene / Photo by IBM

A marketing photo of the IBM 5150 illustrated how the company wanted to push the new personal computer into the workplace.

Caption by Jay Greene / Photo by IBM

Don Estridge, later called "the father of the PC," led the team at IBM that developed the 5150, the personal computer that sparked the PC revolution.

Caption by Jay Greene / Photo by IBM

An advertisement for the IBM 5150 noted: "IBM believes that the age of the personal computer has arrived."

Caption by Jay Greene / Photo by Computer History Museum

IBM sped up development of the 5150 personal computer, worried about the encroachment of the popular Apple II into homes and businesses.

Caption by Jay Greene / Photo by Computer History Museum

IBM turned to a young company, Microsoft, and its co-founders Paul Allen and Bill Gates, for the operating system for the 5150. This photo was shot shortly after Microsoft signed the contract with IBM. The image was featured in the Seattle Business Journal's October 19, 1981 article, "Building on success, Microsoft owners shoot for $100 million target."

Caption by Jay Greene / Photo by Microsoft

An advertisement for MS-DOS 1.0, the operating system that got its start on the IBM 5150 and was used on the so-called clone PCs.

Caption by Jay Greene / Photo by Microsoft

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