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Osborne 1 was the first ever portable microcomputer. It was released in 1981 by Osborne Computer Corporation and used a design that was inspired largely by the Xerox NoteTaker. Osborne 1 was developed by Adam Osborne, a computing book publisher and author, and Lee Felsenstein, a former Intel engineer.
Osborne 1 was primarily designed to offer a portable computer that not only was compact in design but came prepackaged with various productivity software applications. Osborne 1’s design was like a typical briefcase, had a carrying handle at the top, a tough and resilient chassis that could absorb shocks and was able to fit under the seat of an airplane.
The Osborne 1 was embedded with CPM 2.2 operating system, 4 MHZ processor, 64 KB memory, 5-inch display screen, floppy drives and serial and parallel communication ports. The bundled software applications were WordStar word processor, SuperCalc spreadsheet and the CBASIC and MBASIC programming languages.