串行DA，MAX549PDF及汇编原程序，测试成功。51控制。

高速电路的信号完整性问题，共同学习，有借鉴意义-Based on the Signal Integrality theory, the key problem met during signal processing module design and its solution is given

液晶显示程序，C语言编程，相液晶中写入数字，显示所需要的图形-Liquid crystal display

利用AVR单片机实现的慢速USB设备协议-use the AVR MCU agreement slow USB devices

显示数据处理（拆数字）.mcu控制LCD显示数字时的拆数程序，可拆int型整数和float型浮点数，所拆数存放于全局变量 数组中。-Show the data processing (down figure). Mcu control the LCD shows the number of figures at the time of demolition procedures, removable int type integer and float-type floating-point numbers, the demolition of a few global variables stored in the array.

该例程是MC9S12DG128中CAN模块开发的实例，对CAN通讯开发人员来说是个很好的参考资料。-The routine is in the CAN module development MC9S12DG128 examples of pairs of CAN communications developers is a good reference.

万年历挂钟智能系统设计开发环境为ICC,可以编译成汇编,直接下栽到嵌入式avr单片机进行控制-calendar wall clock intelligent system design and development environment for the ICC, can compile a compendium, Embedded directly to the downward avr microprocessor control

单片机控制继电器的自动化调试系统，很详细的描述。-MCU Control Relay automated debugging systems, it is described in detail.

7281键盘显示程序，经过验证，可以直接使用-Keyboard display program 7281, after verification, can be directly used

单片机与电脑通讯，简单的max232代码。-SCM and computer communication, a simple MAX232 code.

sd卡的程序，上面记录了SD卡的详细读卡写卡方式，适合51单片机或者其他-sd card procedures, the above records the SD card reader to write in detail the way cards for 51 single-chip or other