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==Description and History== | ==Description and History== | ||
===Early models=== | ===Early models=== | ||
[[ | [[Image:BBCOwl.png|right|thumb|The BBC Computer Literacy Project 'Owl' appeared on the keyboard, above the function keys on the Archimedes 300 series and A3000 keyboards.]] | ||
The first models were released in June 1987, as the 300 and 400 series. The 400 series included 4 expansion slots (although a 2 slot backplane could be added to the 300 series as an official upgrade, and third parties produced their own 4 slot backplanes) and an [[wp:ST506|ST506]] controller for an internal hard drive. Both models included the [[wp:Arthur (operating system)|Arthur]] OS (later called [[RISC OS]]), [[wp:BBC BASIC programming language|BBC BASIC]] and an emulator for Acorn's earlier [[BBC Micro]], and were mounted in two-part cases with a small central unit, monitor on top, and a separate keyboard and three-button mouse. All models featured on-board 8 channel stereo sound and were capable of displaying 256 colours on screen. | The first models were released in June 1987, as the 300 and 400 series. The 400 series included 4 expansion slots (although a 2 slot backplane could be added to the 300 series as an official upgrade, and third parties produced their own 4 slot backplanes) and an [[wp:ST506|ST506]] controller for an internal hard drive. Both models included the [[wp:Arthur (operating system)|Arthur]] OS (later called [[RISC OS]]), [[wp:BBC BASIC programming language|BBC BASIC]] and an emulator for Acorn's earlier [[BBC Micro]], and were mounted in two-part cases with a small central unit, monitor on top, and a separate keyboard and three-button mouse. All models featured on-board 8 channel stereo sound and were capable of displaying 256 colours on screen. |