The creation of the modern laptop

The world's first commercial laptop—though that is certainly stretching the term—was the Osborne 1. When released in 1981, it cost $1,795, weighed 10.7kg (23.5lbs), and ran an operating system called CP/M. The 1983 Compaq Portable, which ran MS-DOS, was even larger (13kg) and cost $3,590. Neither had a battery, though an aftermarket battery for the Osborne 1 lasted an hour.

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