VDC may refer to any of the following:
1. Short for Voltage Direct Current, VDC is a measurement in a DC system. For example, a computer power supply may rate a cable or wire as +5VDC, which is an additional 5volts of direct current electricity.
2. Short for Video Display Controller, VDC is an integrated circuit responsible for handling a TV video signal in early computers and gaming systems. Today, video display controllers have been replaced by some form of graphic process unit (GPU).