I collect and write their own routine part of 51 series for your reference

method to setup svn, may be can help to you

很好的代码，好好学学，关于51单片机开发的独立键盘程序-A very good code, good to learn about the development of an independent 51 MCU Keyboard Program

=== =时钟20:6=== === == 应先初始化状态寄存器 tx1714 EQU 7FFH PA EQU 05H PB EQU 06H PC EQU 07H PD EQU 20H IAR EQU 00H 间接寻址寄存器 TMR0 EQU 01H 定时器 STATUS EQU 03H 状态寄存器 BSR EQU 04H bank选择寄存器 PORTA EQU 05H I/0端口寄存器 PORTB EQU 06H I/0端口寄存器 PORTC EQU 07H I/0端口寄存器 PORTD EQU 20H I/0端口寄存器 PULL EQU 21H PULL-High上拉寄存器 WAKEUP EQU 22H 唤醒控制寄存器－－被用来设定watchdog允许和禁止 IRQM EQU 23H 中断屏蔽寄存器 IRQF EQU 24H 中断标志寄存器 WDTSEL EQU 25H -=== === = clock 20 : 6 === === === == should first register initialization state tx1714 EQU 7FFH EQU PA PB EQU 05H 06H 07H PC EQU PD EQU 20H IAR E QU 00H indirectly addressable registers TMR0 EQU 01H timer STATUS EQU Mr send state BSR EQU-deposit bank in the 04H choice Register PORTA EQU 05H I/O ports Register P ORTB EQU 06H I/O ports Register PORTC EQU 07H I/O ports Register POR TD EQU 20H I/O ports Register PULL EQU 21H PULL-High pull Register WAKEUP EQU 22H awaken control registers-- were used to set watchdog allowed and prohi

电磁兼容技术培训（杨济深教授讲课稿）,这可是权威之作。是学习电磁兼容技术的工程师必学宝典。- Electromagnetic compatibility technology training (Professor Yang Jishen teaches manuscript), this but work authority. Is engineer which studies the electromagnetic compatibility technology must study the precious book.

单片机AT90S系列 制作简易USB接口（软件模拟,无usb硬件）。doc- Monolithic integrated circuit AT90S series manufacture simple USB connection (software simulation, non- usb hardware). Doc

51单片机的源程序集，有存储器，点阵式液晶，进制转换，led,ad等。-51 SCM source collection, storage, dot-matrix LCD, the base for the conversion, led, ad so.

at89s51的中文资料，方便单片机初学者学习参考，并且翻译质量基本上可以。-English at89s51 of information for beginners to study single-chip reference, and basically the quality of translation.

实现51单片机的日历功能 用T2定时器作为基本时钟中断-The realization of the calendar features 51 single-chip using T2 as the basic clock timer interrupt

G.72音频压缩传输协议-G.72 audio compression and transmission agreement

C8051F06X单片机编程，PortIO源代码-C8051F06X Microcontroller Programmer, PortIO source code