Osborne 1
（重定向自Osborne I）
The Osborne 1 was the first commercially successful portable microcomputer, released on April 3, 1981 by Osborne Computer Corporation. It weighed 10.7 kg (24.5 lb), cost $1,795 USD, and ran the CP/M 2.2 operating system. Powered directly from a mains socket as it had no on-board battery, though it was still classed as a portable device as it could be packed away and transported by hand to another location.