微打坐标打印程序，适用于RD微型打印机，用1B 4B命令实现打印-Micro-fight coordinate print procedures, VB

VB设计的取数据点，可以得到直角坐标系下的数据点坐标，有点简单，但比较实用-VB designed to take data points can be obtained under the Cartesian coordinate system coordinates of data points, a bit simple, but more practical