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com_sample1
- < COM编程精彩实例>>一书的随书源代码光盘的代码，这是第一章的-lt; Lt; COM programming wonderful example gt; Gt; A book with the CD-ROM source code, which is the first chapter
com_sample2
- < COM编程精彩实例>>一书的随书源代码光盘的代码，这是第二章的。-lt; Lt; COM programming wonderful example gt; Gt; A book with the CD-ROM source code, which is the second chapter.
com_sample3
- < COM编程精彩实例>>一书的随书源代码光盘的代码，这是第三章的-lt; Lt; COM programming wonderful example gt; Gt; A book with the CD-ROM source code, which is the third chapter
com_sample4
- < COM编程精彩实例>>一书的随书源代码光盘的代码，这是第四章的-lt; Lt; COM programming wonderful example gt; Gt; A book with the CD-ROM source code, which is the fourth chapter
com_sample5
- < COM编程精彩实例>>一书的随书源代码光盘的代码，这是第五章的-lt; Lt; COM programming wonderful example gt; Gt; A book with the CD-ROM source code, which is the fifth chapter
com_sample6
- < COM编程精彩实例>>一书的随书源代码光盘的代码，这是第六章的-lt; Lt; COM programming wonderful example gt; Gt; A book with the CD-ROM source code, which is the sixth chapter
20085131614903
- 上位机（PC机或具有串口的其他控制设备）通过RS232串口连接到本控制板后，向控制板发送一串ASCII代码指令既可控制步进电机的转向、转速、步进量，完全不需了解步进电机及驱动器的工作原理。例如:串口发送"S100",则步进电机将顺时针以每分钟100转的速度旋转，串口发送"N300",则步进电机将逆时针以每分钟300转的速度旋转；串口发送"S100J",则步进电机将顺时针步进100个步距角，串口发送"N1000J",则步进电机将逆时针步进1000个步距角。用于精密转速控制、精密运动控制、精密机械加