说明：  Abstract七段显示器在DE2可当成Verilog的console，做为16进位的输出结果。Introduction使用环境：Quartus II 7.2 SP1 + DE2(Cyclone II EP2C35F627C6)简单的使用switch当成2进位输入，并用8位数的七段显示器显示16进位的结果。
(Abstract Seven-Segment Display as Verilog to DE2 at the console, as 16 of the output binary. Introduction to use the environment: Quartus II 7.2 SP1+ DE2 (Cyclone II EP2C35F627C6) the use of a simple switch as a binary input 2, and paragraph 8-digit binary display 16 results.)