采用c8051f020芯片，此程序运行时就可驱动微型打印机打印字符或汉字，打印内容可自己定义 -Using c8051f020 chip, this program is running can drive mini-printer character or characters, print content can define their own

3D打印机marlin固件全套，烧录进芯片即可使用-A full 3D printer firmware marlin, burn into the chip can be used