The Commodore 64, also known as the C64, is an 8-bit home computer introduced in January 1982 by Commodore International (first shown at the Consumer Electronics Show, January 7–10, 1982, in Las Vegas).^[4] It has been listed in the Guinness World Records as the highest-selling single computer model of all time,^[5] with independent estimates placing the number sold between 12.5 and 17 million units.^[2] Volume production started in early 1982, marketing in August for US$595 (equivalent to $1,671 in 2021).^[6] Preceded by the Commodore VIC-20 and Commodore PET, the C64 took its name from its 64 kilobytes (65,536 bytes) of RAM. With support for multicolor sprites and a custom chip for waveform generation, the C64 could create superior visuals and audio compared to systems without such custom hardware.