osb1.jpg (34225 bytes)

Computer Osborne 1
Brand Osborne
CPU Z80A  4 MHz
Memory 64Kb RAM,   4 Kb ROM
O.S. CP/M 2.2
Year 4-1981
Additional information
  • Built-in screen 5 inch, 32 lines 128 characters or 24 lines with 52 characters. This was the first "portable" machine with a built-in monitor.
  • 2 x 5,25 inch disk drives, soft sectored, single sided, single density, 40 tracks 10 sectors. This gave a capacity of 102 Kb/disk and 92 Kb was available for programs or data.
  • interfaces:
    • RS_232
    • IEEE_488 (this interface could be configured to become a Centronics parallel port)
    • external video
    • battery pack option

 

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