Osborne 1

The Osborne 1, released in April 1981, was the first portable computer. It
weighed 23.5 pounds (12 kg), cost US $1795 --just over half the cost of a
computer from other manufacturers with comparable features-- and ran the
popular CP/M 2.2 operating system. Besides being the first portable
computer, it was also the first computer that included software; the bundled
WordStar, SuperCalc, dBase II, CBASIC and MBASIC had a retail value of more
than $2,000. Its hardware features included dual 5.25-inch floppy disk
drives, a 4 MHz Zilog Z80 CPU, a fold down keyboard, and a five-inch, 52x24
character monitor.

At its peak, Osborne Computer Corporation shipped 10,000 Osborne 1s per
month. The computer was widely imitated as other computer companies started
bundling software, lowering prices, and offering portable computers.
Osborne's most famous imitator was Compaq, who offered a portable computer
compatible with the IBM PC.

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