设计了单片机端的控制程序，包括步进电机控制、编码器数据采集、RS232通讯、键盘读入、液晶显示屏输出等部分。
The controlling program in MCU part is designed, and it includes the part of step-motor controlling, data collection of the coders, RS232 communication, keyboard input, and LCD output.
该系列仪器采用LCD显示器，配合数字键盘与旋转编码器，使仪器显示直观，全面，操作更简单方便。
The meter adopts LCD display which makes display direct and complete and operation more easy and convenient with digital keyboard and revolving encoder.
配以单片机、键盘、LED显示器及转速编码器，构成闭环调速系统。经过实际测试，取得了很好的效果。
The speed adjusting system consisting of SCC, KB, LED display and speed coder is tested and excellent performance is achieved.
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