使用74164练级8行*2列键盘的行线，74165连接键盘的列线，编写扫描键盘按键的程序，键码显示在发光二极管上。-8 rows with 74 164* 2 columns leveling line keyboard line 74165 column lines connect the keyboard, writing program scans the keyboard keys, key code displayed on the light-emitting diode.

3通道led驱动LPD6803的基本控制程序，以及包括练级控制，C语言编写51单片机适用-3 channel led driver LPD6803 basic control procedures, as well as including leveling control, C language for 51 single

魔力宝贝 FZ 蜥蜴练级 然后回补。很好用的-xiyihuibu molibaobfFZ