目前家庭影院兴起,多媒体电脑逐渐普及,视听器材中音频、视频信号源急速增加,高清晰度视频、高保真音频、数码、电脑等技术的飞速发展,使得与之配套的大屏幕彩电的输入、输出端子也在性能、数量上随之发展。大屏幕彩电一般较重,有的六、七十公斤,不易搬动,设计端子时就把有些一次性联好不经常拔插的端子布置在机身后面,如录像机、VCD、DVD 输入端等。而经常拔 At present, the rise of home cinemas, the popularization of multimedia computers, the rapid increase of audio and video signal sources in audiovisual equipment, the rapid development of technologies such as high definition video, high-fidelity audio, digital and computer make the input, Output terminals are also in the performance, the number of development. Large-screen color TV is generally heavier, and some six, seventy kilograms, not easy to move, when the design of the terminal put some one-time associated not often unplug the terminals arranged in the back of the fuselage, such as VCR, VCD, DVD input and so on. And often pull