frmGoodsOutManage

SIM800 firmware with bluetooth

定时器实例，通过几个例子详细描述了C++在使用定时器的过程中

说明：  用matlab实现龙格库塔法，用于计算微分方程数值解(Realization of Runge Kutta method with MATLAB for numerical solution of differential equation)

输入栅格文件和掩膜矢量，进行批量裁剪.python的版本为2.7，需要导入arcpy模块(batch clip rasters under python2.7 programm)

蓝牙的简单介绍：包含基带层协议、链路管理协议、逻辑链路控制和适配协议、服务搜索协议等其它协议。-Bluetooth simple introduction: contains the base-band layer protocol, Link Management Protocol, Logical Link Control and Adaptation Protocol, service agreements and other agreements english.

说明：  1、单向通信 向甲方连续不断地发送变量a的值，未按键，a=0x0f，按键后根据按键确定a值；并将a的值取反从P0口输出，控制D0、D1、D2、D3相应点亮。乙方接收到数据并偶校验正确后，将接收数据取反从P0口输出，控制D0、D1、D2、D3相应点亮。 2、双向通信 甲方连续不断地发送变量a的值，未按键，a=0x0f，按键后根据按键确定a值；乙方未按键不发送，按键后将乙方按键得到的a*16发送；甲乙双方都将发送数据与接收数据相或后再取反，从P0口输出控制D0—D7相应点亮。 3、间隔发送 未按键，甲方不发送数据，按键后甲方每隔50ms连续发送4个字节：0xff、a、a、a。 乙方只在收到甲方数据0xff后的3个数据并验证相同时，才将接收数据*16发送。 甲乙双方都将发送数据与接收数据相或后，从P0口输出控制D0—D7相应点亮。(1. One-way communication The value of variable a is continuously sent to Party A without key, a = 0x0f. After the key is pressed, the value of a is determined according to the key; and the value of a is output from P0 port to control the corresponding lighting of D0, D1, D2 and D3. After receiving the data and checking it correctly, Party B will output the received data from P0 port and control D0, D1, D2 and D3 to light up accordingly. 2. Two-way communication Party A continuously sends the value of variable a without key, a = 0x0f, and determines a value according to the key after the key; Party B does not send the key without key, and sends the a*16 obtained by the key after the key is pressed; Both parties will send the data to or from the receiving data, and then retrieve the data and control D0-D7 from the P0 port to light up accordingly. 3. Interval Sending Without keys, Party A does not send data. After keys, Party A sends 4 bytes continuously every 50 ms: 0xff, a, a.)

车载故障诊断协议中OBD II接口支持的J1850 vpm部分的代码实现(OBDII Interface Project Source Code)

fortran编写简单的形成地震同相轴,大家需要的可以用下载 用的是雷克子波-form seismic events with fortran

说明：  Study and Simulation of a turbine connected to the network (Turbine + MADA + Network) in continuous and discrete mode.

JSP结合Ajax定时显示提示信息，在JSP页面中定时显示消息提示，应用ajax技术实现。