Blackstone Audio Visual moved from a small shop in central Austin to spacious offices in north Austin in the mid 1980s, in the same complex as Dell computer.
high school | West End | High Court | West End theatre | Adobe Systems | High Court of Justice | High School Musical | BAE Systems | Cisco Systems | Ultra high frequency | high school football | High Court of Australia | High-definition television | East End of London | High Commissioner | West End of London | High Street | Catalog numbering systems for single records | High King of Ireland | High Wycombe | High School Musical 2 | high-definition television | Land's End | United Nations High Commissioner for Refugees | High Middle Ages | High School | Twelve O'Clock High | Preston North End F.C. | Middle High German | Madras High Court |
In order to support expansion for high-end systems, similar to the card slots used in the Apple II or S-100 machines, the 1000 series also supported the Parallel Bus Interface (PBI), a single expansion slot on the back of the machine.