A Boy's Best Friend Is His Motherboard
This is where it all happens. The original C64's motherboard held a total of 40 chips (some of them hidden from view here), which did all the main processing. By 1992, the number of chips on the motherboard had been reduced by a third, to cut costs. The metal box visible at the upper edge of the motherboard (the one with the small yellow sticker on it) contains the unit's video circuitry, including the RF modulator, which prepares audio and video for a TV set's antenna terminal.