From my collection of vintage computers

A fully working Osborne 1 computer.

produced in June 1981 by the Osborne Computer Corporation, the Osborne 1 is considered the first truly portable, full-featured computer. Containing all the requirements for a fully operational and usable computer system.

The components:
two built-in floppy drives, with floppy disk storage compartments
a detachable full-size keyboard with numeric keypad
a built-in, albeit small, monochrome CRT monitor.
it uses the CP / M operating system, the most popular operating system at the time.

Introduced: March 1981
Available: June 1981
Price in 1981: US $ 1.795
Weight: 11 kg
CPU: Z80 @ 4.0 MHz
RAM: 64K RAM
Display: built-in 5 "CRT monitor 52 x 24 text
Ports: Parallel / IEEE-488 modem / serial port
Storage: Dual 5-1 / 4 inch floppy drives
OS CP / M on diskette

The Osborne 1 at that time was a good deal for $ 1,795,
but also came bundled with about $ 1,500 additional free software:

· CP / M Utility
· CP / M operating system
· SuperCalc spreadsheet application
· WordStar word processing program with Mail Merge
· Microsoft MBASIC programming language (interpreted)
· Dbase II database software

All software is included on original OSBORNE floppies. (see pictures )