QueryGeo

光立方【动画+频谱】！8*8*8光立方 的动画和频谱源程序！(Light Cube [animation+ spectrum]! 8* 8* 8 light cube animation and spectrum source!)

高速铁路线路shp格式矢量图,包括电气化快速铁路，时间截止到2015(High speed railway line SHP format vector diagram, including electrification railway fast, time until 2015)

说明：  铁路轨道稳定性计算程序,用于铁路轨道的设计过程中的稳定性验算(the stability of railway track)

SQL for compact framework

Currently, most of people use MS DCOM/COM+, Java Bean/RMI, and Corba to do distributed computing over internet. All of these technologies are provided with some tools and intermediate objects to simplify internet development. However, these technologies have one common and fundamental problem that all of the calls between a client and a server are blocked for a returned result (please correct me if this is wrong). A client stays still, and has to wait for a while after sending a request to a server. If the request is a lengthy action, the client application seems to be dead to a user. In most cases, we could use a worker thread at the client side to do background computation for solving this problem. However, this comes with an expensive price, more coding, data synchronization and mess in coding logic. Additionally, I also doubt that these technologies are able to really move data across internet efficiently.

耀华表通信控件 内置了地磅的串口协议。能自动读取指定的数(Communication control Toledo Electronic loadometer, serial direct source reading program. The source without any Dll, built-in serial port loadometer agreement. Can automatically read the specified binary readings.)

利用winsock控件进行通讯的一个例子(By winsock control to communicate an example)

高速无线射频芯片NRF24L01硬件设计技巧(High-speed wireless radio chip hardware design techniques nRF24L01)

模拟后台案件，例子中只用了 一个记事本 ，(Simulation of background cases)

测试com口程序Private Sub Form_Load() Dim I As Integer Dim Msg As String Me.Enabled = False Msg = 串行端口通讯测试 V & App.Major & . & App.Minor & App.Revision cboCommSettings.Text = GetSetting(App.EXEName, frmCommTest , CommSettings , 2400,N,8,1 ) Me.Show Me.Refresh With MSComm1 For I = 1 To 16 Me.Caption = Msg & - 测试通讯端口:COM & I & ... Me.Refresh Delay 100 On Error Resume Next .CommPort = I .Settings = 2400,N,8,1 .PortOpen = True .PortOpen = False If Err = 0 Then cboCommPort.AddItem COM & Trim(I) Next I End With cboCommPort.ListIndex = 0 optCommData(0).Value = True Me.Caption = Msg & (Programming by WJY) Me.Refresh If cboCommPort.ListCount = 0 Then MsgBox 程序检测不到可用的串行端口! Me.Enabled = True End Sub (test com port)