VIC-20
The VIC-20 is an 8-bit entry level home computer that was sold by Commodore Business Machines. The VIC-20 was announced in September 1980, roughly three years after Commodore's first personal computer, the PET. The VIC-20 was the first computer of any description to sell one million units, and sales of the VIC-20 eventually reached 2.5 million units.
Read on Wikipedia