Delphi编写的发票机打印控制程序，进行发票打印前的一个步骤，通过此程序来设置发票机的相关参数，可设置COM串口，测试打印 打印跳行，打印机跳页，打印机切纸等功能，左侧为数据发送区，右侧是打印数据接收区。

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Delphi written invoice printing machine control procedures, a step before the invoice printing, invoice machine parameters set by this program, you can set the COM port, test Print skip, jump page printers, printer paper cutting and other functions, the left area for the data transmission side, the right side is the print data reception area.