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采用反正法扫描方法对4X4矩阵式按键进行扫描，判断是哪个按键按下。-Scanning method used in any case law on the 4X4 keypad matrix scan to determine which keys are pressed.

在PROTEUS仿真实现，在液晶显示器上显示采集温度的波形图-In the PROTEUS simulation, in the liquid crystal display to show temperature waveform acquisition

自行车里程设计的远程序 他的用途很实际的 并且说明详细-bicycle mileage from the design process he uses a very practical and detailed note

MC8051 IP CoreOregano Systems 8-bit Microcontroller IP-Core此公司提供的8051 core很容易在FPGA 上用同时也是学习VHDL的一份不错的进阶实例-MC8051 IP CoreOregano Systems 8-bit Microcontroller IP-Core company for the 8051 core very easy to use in FPGA VHDL is also studying a good example of the SSP

系统下,地球坐标转换的源代码,在WGS-84坐标和北京54坐标之间的一套转换参数,可以全国通用的，在每个地方会不一样，因为它们是两个不同的椭球基准。 // WGS2GK.CPP : C++ version of Ottmar Labonde s WGSDHDN3.PAS with CPU time measurement // compile with MS Visual C++ version 6.0 or do the necessary modifications for your compiler // // Conversion of -system, the Earth coordinates conversion source code, the WGS-84 coordinates and coordinate between Beijing 54 set conversion parameters can be nationwide, in every place to be different, because they are two different ellipsoid benchmarks.// WGS2GK.CPP : C version of Silverstone Labonde s WGSDHDN3.PAS with CPU time measurement// compile with MS Visual C version 6.0 or do the necessary modifications for your compiler//// Conversion of

实现stc单片机，两个单片机之间的SPI通讯。单主单从-Stc achieve single-chip, two single-chip communications between the SPI. Single-master single from

MCS―51单片机系统扩展 简单的并行接口由数据寄存器和少量的控制电路组成，暂存传送的数据。以锁存器、缓冲器为主要芯片，稍加控制都可以作为简单的并行接口.-MCS-51 single-chip microcomputer system to expand a simple parallel interface from the data register and a small number of control circuit components, temporary storage of data transmission. To latches, buffers as the main chip, a little control can be used as a simple parallel interface.

SPWM输出，SVPWM输出，移相PWM输出-SPWM output SVPWM output phase shift PWM output

用SD模式读SD卡的代码,写功能尚未实现,希望能给您一点帮助!-SD mode with SD card code reading and writing function has not yet been achieved, I hope to give you a little help!

利用脉冲控制伺服电机运转，伺服电机频率通过改变定时器初值来控制-The use of pulsed operation of servo motor control, servo motors by changing the timer frequency to control the initial value