RCA connector
An RCA connector (sometimes called a phono connector or cinch connector), is a type of electrical connector commonly used to carry audio and video signals. The yellow is for video, the white is for left stereo, and the red is for right stereo.
RCA Connector Media
Rear panel of a 1939 RCA model 45EM vacuum tube desktop AM radio with a female RCA jack. Tag reads "An inexpensive RCA Victor record player will make a fine Victrola of this radio. Plug here."
RCA female jacks used for YPbPr component video output
Composite video cable with RCA male plugs for the Xbox 360
First generation of the Apple TV with RCA stereo outputs