8.FLASH

刚才上传的频率计程序可能不太好，现在这个计数外部脉冲的程序，还是较好的，只是得自己从中截取出来(Just upload the program may not be a good frequency counter, and now this external pulse count procedures, or better, just get yourself out from the interception of)

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

J1939 protocol description

说明：  基于51单片机红外遥控智能小车（原理图、PCB、遥控器控制程序、实物图）(ntelligent car based on 51 microcontroller infrared remote control (schematic diagram, PCB, remote control program, physical map).)

通过DS18B20读取温度（范围-55C~125C，精确到小数点后一位），通过4位数码管显示出来。 当温度为正且百位为零时，不显示，当温度为负时百位显负号。当温度百位和十位都为0时0都不显示。(Read through the DS18B20 temperature (range-55C ~ 125C, accurate to one decimal), through four digital tube display. When the temperature is zero and 100, do not show, when the temperature is significantly negative at minus 100. When the temperature is 100 and 10 are not displayed 0:00.)

nRF905接收程序,可与k60连接进行无线通信(RF905 receiving program can communicate wirelessly connect with k60)

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

单片机HUFFMAN压缩算法的研究与实现，有在单片机上进行开发的同学可以下载看看！(Huffman compression algorithm Singlechip Research and Implementation, has carried out development in SCM students can download to see!)

利用PID算法控制PWM输出电压，实现串联型数控电源，通过键盘输入控制期望电压(PID algorithm to control the use of PWM output voltage to achieve tandem CNC power, through the keyboard input control voltage expectations)

MSP430FR57x Demo - Toggle P1.0 using software Description: Toggle P1.0 using software. ACLK = n/a, MCLK = SMCLK = TACLK = default DCO = ~625 KHz(MSP430FR57x Demo- Toggle P1.0 using software Description: Toggle P1.0 using software. ACLK = n/a, MCLK = SMCLK = TACLK = default DCO = ~625 KHz)