Tag: Osborne

Osborne 1 computer

Osborne 1 computer
Osborne 1
Introduced: March 1981
Available: June 1981
Price: US $1,795
Weight: 24.5 pounds / 11 kg
CPU: Zilog 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



Osborne 1 – 1981


By Osborne Computer Corporation



Released in June 1981 by the
Osborne Computer Corporation
, the Osborne 1 is considered to be the first true portable, full-featured computer.
It includes all the components required to be a completely useful and operational computer system:

  • two built-in floppy drives which hold 91K of data each, with floppy disk storage compartments
  • a detachable full-size keyboard with numeric keypad
  • a built-in, albeit small, monochrome CRT monitor.
  • runs the CP/M Operating System, the most popular OS at the time.
  • What makes it portable, or more often

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