在FPGA上，实现了一个多功能数字抢答器，设置四个抢答按钮，及若干控制台按钮，有计分，抢答，重置，及时等功能-In the FPGA, the realization of a multi-functional digital Answer, and set up four Answer button, and a number of console button, there are points, Answer, replacement, and other functions in tim