The Commodore 64 is the best selling single personal computer model of all time. Released in August 1982, the Commodore 64 is commonly referred to as the C64 (sometimes written C= 64 to mimic the Commodore company logo) and occasionally known as CBM64 (its model designation), C-64 or VIC-64 (a label used by some users, magazine writers, third party advertisements and also by Commodore in Sweden).
The Commodore 64 casing has affectionately been nicknamed the "breadbox" and "bullnose" due to its shape. Introduced by Commodore Business Machines in August 1982 at a price of US$595, it offered 64 kilobytes of RAM with sound and graphics performance that compared favourably with IBM-compatible computers of that time. During the Commodore 64's lifetime (between 1982 and 1994), sales totaled around 17 million units.
Unlike computers that were distributed only through authorized dealers, Commodore also targeted department stores and toy stores. The unit could be plugged directly into a television set to play games, giving it much of the appeal of dedicated video game consoles like the Atari 2600. Its affordable pricing contributed to the video game market crash of 1983.
For the rest of the Wikipedia entry on the above term, go here.
The Commodore C64 might be well gone but some people have tried to revive it using the Nintendo DS gaming console.