这是一个PCB常用的封装，特别是对于学单片机的同志来说是不可多得的

max7219控制的源程序，经过测试，给需要者

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C51编写的1602液晶片驱动程序，是C语言编写的！-C51 prepared by the 1602 film LCD driver is prepared by the C language!

单片机多机通信,分为主机部分和从机部分。-Single-chip multi-machine communications, the host is divided into parts and parts from the machine.

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spiflash操作，在C8051f310下测试过-spiflash operation, under the tested in the C8051F310

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51单片机对 siemens4442卡的底层驱动程序 把.rar改成.C即可-51 Singlechip siemens4442 card on the bottom of the driver. Rar changed. C can be