Avr microcontroller based on a displayed string 74hc164 into the simulation (pro...

很好的字模提取工具！能够大大加快开发字模显示程序的开发！比如说：液晶显示，led点阵模块的数据显示！-good Abstraction tool! Able to greatly accelerate the development of character mode display program development! For example : LCD, led dot matrix module data show!

利用单片机实现三相电源的相序检测 利用单片机实现三相电源的相序检测-Realize the use of single-chip three-phase power supply phase sequence detection using single-chip realization of three-phase power supply phase sequence detection

用 AT89C51、LED 数码管、按键、二极管等部分构成，能实现时钟日历的功能：能进行时、分的显示。也具有时钟，定时时间的设定，实现三路开关定时输出等功能。-With AT89C51, LED digital tubes, buttons, diodes and other components, to achieve clock calendar function: to carry out, the sub-display. Also has a clock, timer time setting, the realization of three-way开关定时output functions.

编译环境为ADS, 用于proteus仿真，基于ARM7芯片-Compiler environment for ADS, for the Proteus simulation, based on the ARM7 chip

C51库只提供长整形乘法，对于超过长整形的计算只能自己编辑软件。-C51 for only provide long-plastic multiplication, long plastic over the calculation only their own editing software.

80C51单片机中利用蜂鸣器实现电子琴的源程序。包含蜂鸣器的datasheet。-80C51 single-chip buzzer realize the use of the source organ. Contains the buzzer datasheet.

4*4矩阵键盘（查表法） （C51环境）-4* 4 matrix keyboard (look-up table) (C51 environment)

AT89S52加AD5933做的简易网络分析仪-AT89S52 Add AD5933 to do simple network analyzer

x5045有四种功能：分别是上电复位、看门狗定时器、电源电压监控和块锁保护串行eeprom的功能， 该程序通过改变控制寄存器的参数可以实现看门狗定时器监视电压和设置保护rom区，每次复位后 地址计数器都是该区的首地址（个人观点），即断点地址。 问题：其实对该芯片的应用还是很模糊-x5045 four functions : the reduction of electricity, watchdog timer, Supply voltage control and protection block serial eeprom lock function, The procedure by changing the parameters of control register can be achieved watchdog timer and set up surveillance voltage protection rom, After each reset address counter area is the first address (personal view), breakpoint address. Question : In fact, the application of this chip is still very fuzzy! !

HD7279与51的驱动，主要修正了延时函数及按键函数，按键采集通过中断采集。-HD7279 51 and the driver, amended the delay function keys and function keys acquisition through acquisition interruption.