spi

stc12c5a60s_spi直接驱动st7920(12864) 串口驱动、只用个IO口(stc12c5a60s_spi direct drive st7920 (12864) serial driver, only with a IO port)

ad采集及12864显示额程序 基于atmega128(ad 12864)

串行da模块的应用，和单片机通信，通过单片机控制da模块(Serial da module application, and single-chip communication, via da MCU control module)

1.44寸显示屏显示资料，可显示汉字，图片，彩色图片，带取模软件(1.44-inch display screen display data, can display Chinese characters, pictures, color pictures, with the module software)

本程序利用特征线法计算管道水击的压力和流量(The program uses the method of characteristics to calculate the value of the pipeline water hammer pressure and flow values.)

32位单精度浮点数的乘加运算的C编程，感兴趣的可以看一下(Single-precision floating-point multiply-add operation of the C programming, interested can look at)

jm20316移动硬盘盒---原理图，PCB板图。非常好用的资料(jm20316 HDD Enclosure--- schematics, PCB board map. Very useful information)

单片机联网的UIP协议程序，以及必要的驱动程序。(Networked microcontroller UIP agreement procedure, and the necessary drivers.)

测试电脑鼠各个红外探测器的算法，可自行调试(Test each computer mouse infrared detector algorithm, self-debugging)

pt100高精度测量电路，精度误差小，速度快，arm9 c51均可实现 ，仅供学习 参考(PT100 high precision measurement circuit, precision error is small, fast, C51 ARM9 can be achieved, only for learning reference )