usb host的驱动程序,用于实现usb端口的初始化等

该源码采用标准c编写，使用SPI方式访问SD卡。-c prepared using standard, the use of SPI mode visit the SD Card.

Keil C51编写的Aduc812的完整代码，适合学习使用Aduc812单片机进行AD_da处理 -Keil C51 prepared by the Precise code of integrity, Precise suitable for learning to use the MCU for handling AD_da

凌阳61单片机的外部中断使用方法（用汇编语言编写）。-Sunplus 61 single-chip microcomputer to use the external interrupt (using compiled languages).

本库利用51的timer2，9600bps适用于有片内外部存储器的51芯片占用32byte缓存，重写putchar,getchar函数，循环队列，后台操作。-for the use of timer2 51, 9600 applied to the external memory unit within the occupied 32byte 51 chip cache, rewritten putchar, getchar function, circulating cohort, background operation.

protel99se的十来个元器件库文件。希望对大家画图的时候能起到帮助。-Protel99SE library file of a dozen components. Wish to draw a time when everyone can help.

OCM4X8C液晶显示在凌阳单片机上的驱动程序-OCM4X8C in Sunplus LCD Single Chip Driver

68013控制1602LCD,68013控制1602LCD-68013 control 1602LCD, 68013 control 1602LCD

PCF8563 时钟芯片驱动 89C51 -PCF8563 clock chip driver 89C51

这是一个键盘扫描的程序，相信想做毕业设计的同学非常想得到的哦，想要就看看吧，不好的话多提建议哦-This is a keyboard scanning procedures, wanted to believe that the students graduate design is the kind of oh, want to see it on, the poor more suggestions oh

美国TI公司的protel 元器件库，在应用中需要更新，本人收集了最新的版本共30M，为提高上传速度分六次上传。文件名依次为TI_1到TI_6。希望大家设计电路板时少走弯路 以下是TI_5-TI" s U.S. Treasury protel components, need to be updated in the application, I collected a total of up-to-date version of 30M, to improve the upload speed upload six hours. File name followed by TI_1 to TI_6. Hope that the design of circuit board is less detours following TI_5