The Osborne 1 weighed 24 pounds with a 5-inch screen and dual floppy drives — users carried a complete CP/MControl Program for Microcomputers — an early OS that ran on many pre-IBM PC microcomputers. system between home and office. Its bundled software bundle pioneered the "killer app" sales model. Though short-lived as a company, Osborne proved demand for luggable computers before the IBMInternational Business Machines — a major computer and enterprise technology company since the early 20th century. PCPersonal computer — a computer designed for individual use, especially desktop or laptop machines. dominated portables.

The Osborne 1 was the first mass-market portable microcomputerA small computer built around a microprocessor — the category that became personal computers. sold to businesses.

It established the portable form factor and software-bundle strategy for early PCPersonal computer — a computer designed for individual use, especially desktop or laptop machines. vendors.