用单片机 AVR mega48来模拟usb 很好的通讯方案

CP2200中文手册，不错的东西，不错的东西-CP2200_cn good good good good good

C8051F控制网卡芯片实现网络通信功能。显示出第三代51单片机的强大之处-C8051F control card chip network communication functions. Show that the third generation of powerful 51 SCM"s Office

hd7279的应用程序，实现了对八个二级管的控制。-hd7279 applications realize the eight diode control.

x5045有四种功能：分别是上电复位、看门狗定时器、电源电压监控和块锁保护串行eeprom的功能， 该程序通过改变控制寄存器的参数可以实现看门狗定时器监视电压和设置保护rom区，每次复位后 地址计数器都是该区的首地址（个人观点），即断点地址。 问题：其实对该芯片的应用还是很模糊-x5045 four functions : the reduction of electricity, watchdog timer, Supply voltage control and protection block serial eeprom lock function, The procedure by changing the parameters of control register can be achieved watchdog timer and set up surveillance voltage protection rom, After each reset address counter area is the first address (personal view), breakpoint address. Question : In fact, the application of this chip is still very fuzzy! !

用C51实现MCS51系列单片机外接ROM扩充--Using C51, it implements external ROM expansion for MCS51 series SCM.

CC1100射频电路的线路板和已经调通的源码-CC1100 RF circuit and the circuit board s source code has been transferred

一些自己编写的verilog代码，供初学者学习用，觉得还是合适的。-I have written a number of Verilog code, for beginners to learn, think it appropriate.

一个简单的利用查表法的反正切和正、余弦函数，在处理速度不快的单片机编程中，这是一个使用的方法。-The use of a simple arctangent look-up table method and positive, cosine function, the processing speed of microcontroller programming unpleasant, this is a method used.

IO口模拟串口，c语言编写，使用一个定时器中断-Serial IO mouth simulation, c language, the use of a timer interruption

51事例原代码 很多很好用 51事例原代码 很多很好用-51 examples of the original code with a lot of very good examples of the original 51 code with a lot of very good