本设计采用ATEML公司的mega16 单片机对步进电机进行控制，通过IO口输出的具有时序的方波作为步进电机的控制信号，信号经过芯片L298N驱动步进电机；同时，用键盘来对电机的状态进行控制。-This design uses the company ATEML S mega16 SCM ATEML stepper motor control, through the IO port output with the timing of the square wave as a stepper m

此为我们组在学校比赛中设计的多功能计数器的系统设计文档，此多功能计数器即是测频测相器（硬件使用EPM240采样和计数，mega16取数和控制）-This is our group s multi-purpose counter system design documents in school competitions. This multi-function counter that is the frequency and phase detector(hardware using EPM2

此为我们组在学校比赛中设计的多功能计数器的系统设计文档，此多功能计数器即是测频测相器（硬件使用EPM240采样和计数，mega16取数和控制）-This is our group s multi-purpose counter system design documents in school competitions. This multi-function counter that is the frequency and phase detector(hardware using EPM2

AVR mega16 使用的矩阵键盘和1602液晶程序代码，带Proteus仿真。 按一键后在LCD1602 屏幕上显示按键号。-Code of Matrix keyboard and LCD1602 for AVR mega16, with Proteus simulation. After press the key, display key’s number on the LCD1602 screen .