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IBM Multistation Timeline

This diagram shows the chronological order in which the various Multistation systems were released. See also the PS/55 Timeline.
5550 5560 5540 5530 5535
1983.03
5550gh image
5551-A/B/C


















1985.02
5550gh image
5551-D/E/G/H


5540bfgh img
5541-B














.09



5560gh image
5561-G/H
5540bfgh img
5541-E














1986.05
5550jk image
5551-J/K
5560jk img
5561-J/K
5540bfgh img
5541-J/K
















The series was renamed to "Personal System/55" at this point.











1987.05
5550mp img
5551-M/P
5560mp img
5561-M/P



5530 img
5530-G/H












.09







5530 img
5530-G1












.10





5540mp img
5541-M/P


5535 img
5535-M08











1988.10
5550mp img
5551-M1/P1






5535 img
5535-M18











.11





5540mp img
5541-M1/P1














1989.11








5535 img
5535-M19

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
Last update: 05 Apr 2025 - Changelog | About | Legal & Contact