Apple III – Anaheim convention center NCC 80
Smart tweets about the Apple III, and the Disneyland event : https://twitter.com/drop_iii_inches
The Apple III was announced on May 19, 1980, during the National Computer Conference (NCC) in Anaheim, California.
The Apple III was released to much fanfare – Apple rented Disneyland for a day and commissioned bands to play in the Apple III’s honor. Apple was extremely proud of its new product, because it was its first business-orientated computer and also its first departure from the Apple II architecture. Source