Followed by tinkering around with our Commodore 64 also known as the C64. The C64 is arguably the Best Selling Computer In History. The 8-bit home computer was introduced in January 1982 by Commodore International. It has been listed in the Guinness World Records as the highest-selling single computer model of all time, with independent estimates placing the number sold between 10 and 17 million units. The C64 was equal parts tool, entertainer, and teacher, and many of those who grew up with it shaped the worlds of computer games, graphics, and music.