说明，单片机应用，这是一个使用单片机的I/O口线控制微型打印机的实用程序，微型打印机为: 40针内含汉字库的并行接口点阵打印机，通过P0及P2口控制-, Microcontroller applications, this is a microcontroller I/O port line utility to control micro-printer, mini printer: 40-pin containing Chinese Characters parallel interface

这是一个使用单片机的I/O口线控制微型打印机的实用程序。微型打印机为: 40针内含汉字库的并行接口点阵打印机。-This is a use of MCU I/O port line control utility for micro printer. Micro printer is: 40 needle is embedded with parallel interface of Chinese character dot matrix printer.