TRW Vidar (original) (raw)

TRW Vidar was an American telecommunications company, owned by TRW Inc., that made digital telephone switches from the mid-1970s to the early 1980s. They were the first, or one of the first, companies to make such a switch. Before being acquired by TRW Inc., they were known as Vidar Corporation and later, after a buyout, they were known as American Digital Switching.