7816协议，搞IC卡的应该都知道这是什么东东，里面有7816-3 -4。,7816 agreement, engaged in IC card should all know what this is Dongdong, there 7816-3-4.

可以帮助您比较快捷方便的了解7816-3协议-can help you learn fast and convenient comparing 7816 agreement