用VHDL和verilog实现的四人抢答器-using VHDL and verilog realization of four Responder

四人抢答器，ax516开发板完成功能，基于verilog hdl(Four person responder)

四人抢答器：这是一款四人抢答器。广泛用于各种各样的抢答环境，作用非常大，方便又便宜。(his is a four person responder. Widely used in a variety of answer environment, the role is very large, convenient and cheap.)