Osborne 1
（重定向自Osborne I）
![](/Images/godic/202501/31/Osborne_1_open3655.jpg")
![Later model Osborne 1 with the redesigned case](/Images/godic/202501/31/Osborne013655.jpg")
![The 500+ page Osborne 1 user manual contained instructions on the hardware, WordStar, Supercalc, BASIC software and the CP/M operating system and utilities](/Images/godic/202501/31/Osborne_1_user_manual_cover_6403655.jpg")
![ADVENT (Colossal Cave Adventure) running on an Osborne Computer c. 1982](/Images/godic/202501/31/You_are_standing3655.jpg")
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.