4 keyboard test procedure four keyboard test procedures

用AVR单片机实现的PT100温度传感器测温程序-AVR MCU with PT100 temperature sensor measurement procedures

led大屏幕点阵 有程序参考，在灯饰上用处很大！-led large screen dot-matrix program has a reference on the use of lighting at great!

L297+L298控制步进电机，用proteus进行仿真-L297+ L298 stepper motor control, using Proteus simulation

ARM汇编指令详解 （含测试题）,-ARM compilation of detailed instructions (including test questions),

FFT子程序，用于AVR单片机上，为7级128点的FFT-FFT Subroutine for AVR Single Chip, for the seven 128-point FFT

读写C8051F020内部FLASH的代码-Read and write code C8051F020 internal FLASH

NOKIA手机屏３３１０驱动，完成了显示图形，汉字字符，浮点型数据，英文字符串函数，可直接调用．-NOKIA mobile phone 3310 driver screen to complete the display graphics, Chinese characters, floating-point data, the English string functions can be called directly.

使用68HC705J1A写的一个键盘的代码,包括资料说明,一份难得的资料,本人开发键盘时好不容易才找到的资料-68HC705J1A use of a keyboard to write code, including the information note, a rare information, I developed the keyboard is not easy to find when the information

51控制STA013实现MP3音频解码，实现了STA013的初始化、音量调节、静音、音质设置、声道控制。同时包含通过RS232串口控制LCD实现同步显示。代码经过调试，运行通过。

AD转换的分辨率=参考电压/(总元素-1) 当AD为8位，总元素=256（ff）取参考电压=Vdd=5V时 分辨率=5/(256-1)= 0.019607843-resolution of the AD converter reference voltage =/(total element 1) When the AD for eight, with a total element = 256 (ff) the reference voltage Vdd = = = 5V resolution 5/(256-1) = 0.019607843