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See below for specifications and information on this system.
Specifications and information
Key Dates: | Announced April 1981 |
Original Price: | $1800 ($1295 in 1982) |
CPU: | Zilog Z-80A |
Memory: | 64K RAM |
Operating System: | CP/M |
Display: | 52 characters by 24 lines, text only |
Input/Output: | Dual internal 5 1/4" 182K floppy disk drives (original version 100K drives); serial port; detachable keyboard; built-in 5" green monochrome monitor; optional internal 300 baud direct-connect modem; optional port for external composite monitor |
Weight: | 24 1/2 lbs |
Bus: | None |
Other Items in Collection: | Documentation; CP/M system disks |
Items Needed: | Bundled software |
The Osborne 1 was the original mass-market portable computer, and pioneered the "luggable" form-factor with the detachable keyboard forming a lid on one end of the machine.
The Osborne shipped with a prodigious bundle of software that made the machine a terrific deal at the time. It was incredibly usable and fairly rugged (once the original thin plastic case was replaced by a solid ABS case in the "Osborne 1a" version).
I've always had a soft spot for this machine. It's a really elegant design, though some criticize its tiny 5" monitor. The included version of CP/M could read a dozen diskette formats, which was really helpful. The Osborne 1 was replaced by the Osborne Executive in 1983.
The Osborne 1's major competitor was the Kaypro 2, with a 9" display in a similar package.
Here's a shot of the tan version Osborne 1 with case closed:
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Last modified: April 17, 2003