单片机处理信号的自动聚焦系统，利用单片机控制光学镜头，实现自动聚焦功能-Single-chip signal processing of the auto-focus system, the use of single-chip microcomputer controlled optical lens, to achieve auto-focus function

51单片机系统控制步进电机，驱动载有相机的滑台移动，实现CCD相机对焦的程序。-Auto-focus system based on 51MCU, which can be used in step motor control and auto focus.