在W90P710开发板上基于中断的键盘输入程序、中断的定时器程序、LED灯、LCD显示的基础上设计的电子抢答器，完成选手抢答，显示选手号和回答答案并判断对错的功能。-Interrupt-based keyboard input program in W90P710 development board, the timer interrupt program, LED lights, LCD display based on the design of electronic Responder,