设计应用接口作为一个十六位二进制编码器的输入口，并用该口作为四位LED七段显示器的输出口，循环显示其编码的结果。利用逻辑开关板输入一个十六位的二进制数，利用LED七段数码显示控制电路板的LED七段显示器，循环显示与所输入的十六位二进制数相对应的四位十六进制数。

-Design Application Interface as a 16 binary encoder input port, and use the mouth as the 4 LED seven-segment display output, loop shows the encoding results. The use of logic switch plate 16 to enter a binary number, using seven-segment LED digital display control circuit board LED seven-segment display, circular display with the input binary number 16 corresponds to the four hexadecimal digits.