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。...

51系列单片机读卡程序，本人亲测，适合考勤、门禁。-51 Series single-chip reader program, I pro-test for time and attendance, access control.

读卡器IC卡SL4428 读写模块源代码-Reader IC card SL4428 R/W Module source code

zlg7290的应用程序，使用哪个keil开发。c语言和汇编语言。移植性好。-zlg7290 applications, the use of which keil development. c language and assembly language. Transplantation is good.

俄罗斯方块程序 ,本压缩包里面含有原理图和远程序(Proteus),-Russian box procedure, the compressed packet inside contains schematic and far from the procedure (Proteus),

在C8051F930单片机上，利用端口匹配和PCA实现按键的长按、短按功能。-In the C8051F930 microcontroller, using the port matching and PCA to achieve a long button press, short press functions.

51单片机用串口接收645规约。已经调试好 有详细的说明-51 single-chip receiver with serial port 645 of the Statute. Already have good debugging detail

用c51的isp串行下载-with the serial download isp

LT_1B msp430开发板例子程序－LPM3

AVR单片机控制nokia3510i nokia6100液晶显示屏的库文件及例程-AVR control nokia3510i nokia6100 LCD screen of the library and routines

便于单片机简单使用时钟功能的，对于初学者特别有用，只需要稍微懂得电路，了解做个电子时钟原理即可-Simple and easy to use single-chip clock function, particularly useful for beginners, require only a slight circuit to understand, understand to be a principle of the electronic clock to