To the east, Kanata is separated from the former City of Nepean by the National Capital Commission's Greenbelt. The community of Bells Corners borders the inner side of the Greenbelt. Bells Corners is itself a hi-tech suburb that was established around 1950, and was home to such Canadian technology icons as Computing Devices Canada, the Ottawa-based defence electronics company (bought by General Dynamics), which blazed the trail for later defence technology firms, in what is now unofficially known as Silicon Valley North, or Kanata.