With the continuous development of science and technology and the continuous improvement of technology, a variety of household appliances have been developed. My children entered primary school, they began to learn English, the last words I said back to adapter , he gave me very glad that he learned the word, also know what, took a sample when the teacher in the class, I came back he said to adapter usage in our home has a lot of home appliances will use adapter , such as refrigerators, televisions, LED lighting, communications equipment and so on is really widely application, now the medical equipment will also use adapter. He knew all about adapter .