在AVR单片机的控制下，通过WinAVR编译器和makefile的编写，在一个数码管上实时输出键盘输入的字符，当在键盘上按下某一个键时，在数码管上显示该键的值。如按下1时数码管显示1，按下F时数码管显示F。-control, through WinAVR compiler makefile and the preparation, in a real-time digital control keyboard input output of the characters, when pressed on the keyboard a button, digital tube revealed that the value of the bond. Touching 1:00 a Digital Display, when pressed F F Digital Display.