什麼是rca線?

RCA其實唔係講條線,係講個接頭.我地經常見到的紅白線嗰個接頭就係RCA方式.
其實唔單只紅白線會用呢種接,數碼同軸線,色差線都會用.
其實仲有好多種接頭方式
影像方面有HDMI, DVI, 色差, S-video, 複合(即係RCA線), VGA, Scart, D端子, BNC等等
音訊方面就有HDMI, RCA, 光纖等等.
詳情可以睇以下網頁.
http://www.ramelectronics.net/howto-av.ep

This link is very helpful. Thank you!

please refer this link;

http://en.wikipedia.org/wiki/RCA_connector