1602PAD

与沉默的开关为iOS，精选ios编程学习源码，很好的参考资料。(And the silence of the switch is iOS, select learning IOS programming source code, a good reference.)

AT89S52键盘程序,这是一个变频器的键盘驱动程序，简单，可靠，芯片为51单片机(one simple progrem for 51,if you like ,you can use it freely.)

用138,595控制的点阵，附带两个不同控制方式的源程序以及电路连接图，(With 138,595 dot control, with two different control modes of the source and a circuit connection diagram,)

Simple app that communicates with the iPhone/iPod/iPad serial port for debugging/hobbyst purpose.

AT89C51SND1C方案mp3资料包括源程序与原理图(AT89C51SND1C program information, including source code and mp3 schematic)

51单片机的一些例程，包括led、数码管、点阵、sd等等(51 examples)

NTC测温程序的查表方法--经典的二分法。(NTC thermistor temperature measurement program)

基于51单片机的信号发生器 四种波形显示 有级调频(Based on 51 single-chip signal generator)

说明：  用mcs-52系列单片机实现等精度频率测量，T1引脚接被测TTL信号，晶振22.1184MHz，对任何频率都可以实现很高精度的测量（精度<1 )，结果从串口字符串输出，波特率115200，可以用串口调试器观察结果.(With mcs-52 family of single chip and other precision frequency measurement, T1 pin then measured TTL signal, Crystal 22.1184MHz, any frequency can be achieved very high accuracy of measurement (precision<1 ), the result string from the serial output , baud rate 115200, serial debugger can observe the results.)

最小的单片机PWM控制，电压控制PWM输出，智能化，体积小。(ADC control PWM output)