The signal source with the HDMI output interface can be output to a receiver with a HDMI input interface. Generally speaking: the computer with HDMI output port is the source of HDMI signal, and the TV with HDMI input is the receiver. When the computer and TV are connected through the HDMI line, the TV becomes the second screen of the computer.
Only one HDMI line is needed, which can transmit video and audio signals at the same time without needing multiple wires to connect. At the same time, because no need of digital / module or modulus / number conversion, higher quality of audio and video transmission can be achieved. For consumers, HDMI technology can not only provide clear picture quality, but also greatly simplifies the installation of home theater system because of the same cable used in audio / video.