  Home > Timelines > RISC OS |
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|  |  |  |  | 87 | ArthurOS is released | | | 12 Sep 87 | ArthurOS 1.2 is released
| | | Apr 89 | RISC OS 2 is released
| | | Sep 91 | RISC OS 3 is released | | | Aug 92 | RISC OS 3.1 is released | | | 29 Sep 92 | RISC OS 3.11 is released
| | | Apr 94 | RISC OS 3.5 is released | | | Jul 96 | RISC OS 3.6 is released | | | Sep 96 | RISC OS 3.7 is released | | | | RISC OS 3.71 is released
| | | Jul 99 | RISC OS 4 is released | | | 01 | RISC OS 4+ is released |  |
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