Although it looks like an unimpessive keyboard-like box, the C-64 was wildly popular. More C-64's have been sold than any other single computer system, even to this day. That's about 17 million systems, according to the Commodore 1993 Annual Report. In a 1989 interview, Sam Tramiel, then-president of Commodore, said that "When I was at Commodore we were building 400,000 C64s a month for a couple of years." Learn More