unable to communicate with printer

In the industrial control test system, often need to use all kinds of programmed instruments, these programmed instruments usually have GPIB, LAN, USB and other hardware interface, the computer through these interfaces can communicate with, so as to achieve automatic measurement, data acquisition, analysis and processing operations. This paper mainly introduces how to communicate with programmed instrument

First, introduce This concludes my understanding of the way of communication between Java multithreaded threads, mainly in the form of code combined with text to discuss the communication between threads, so excerpt some of the book's sample code. Second, the way of communication between threads ① Sync Synchronization here refers to the way multiple threads use the Synchronized keyword to communicate between threads. Reference Example: pu

Article Description: how to communicate with design staff. Recently made a picture annoying, constantly change the map, change the map .... Annoying, not because of change, but repeatedly change, people will die. Many demand personnel do not know how to communicate with the design staff, do not understand how to make the design staff know he wants the effect, the result can only be communication

synchronization and communication between processes.6. Semaphore Semaphore: Semaphore is a counter that can be used to control the access of multiple processes to shared resources. It is often used as a locking mechanism to prevent a process from accessing the shared resource while other processes are accessing the resource. Therefore, it is primarily used as a means of synchronization between processes and between different threads within the same process.7. Socket SOCKET: The socket is also a

Toolbar from the associated menu that appears. Drag the Advanced (gear) icon to the toolbar. Click Finish. Click the advanced icon added to the toolbar. Choose Windows from the Type pop-up menu. In the URL column, enter the address of the printer in one of the following formats: Smb://workgroup/server/sharename Smb://server/sharename Note: "Workgroup" is the name of the Windows workgroup to which the computer sharing the

change sharing options Check "Enable Network Discovery" and "Enable file and Printer Sharing" to check Network discovery and file and printer sharing under allow programs to communicate through Windows Firewall. and "Home/Work (private)" and "public" are selected 4, Win7 should enable the Guest account WinXP machine side: 1, first to enable file and

Article title: Linux operating system printer configuration Raiders (photos ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 　　 I. development roadmap of the Linux printing system 　　 In the Unix world, the PostScript language is mainly used for printing interfaces. All major applications output general-purpose Po

=Attach_current_thread();Pthread_setspecific (current_jni_env, env);} return env;} /* Change the content of the UI ' s TextView */static voidSet_ui_message(const Gchar *message, CustomData *data) {jnienv *env = get_jni_env ();Gst_debug ("Setting Message to:%s", message);Jstring jmessage = (*env)->newstringutf (env, message);(*env)->callvoidmethod (env, Data->app, set_message_method_id, jmessage); if ((*env)->exceptioncheck (env)) {Gst_error ("Failed to call Java method");(*env)->exceptionclear

ThresholdReachedEventArgs (); args. Threshold = threshold; args. timeReached = DateTime. now; OnThresholdReached (args) ;}} protected virtual void OnThresholdReached (ThresholdReachedEventArgs e) {EventHandler Applications in games We use a bird to knock down a pipe to illustrate how to communicate: Using UnityEngine; using System. collections; using System; public class BirdController: MonoBehaviour {public event EventHandler GameOver; public event

ending in 0, whose length can be obtained by strlen.The stack operation:The API uses "index" to refer to the elements in the stack, the first to push the stack to 1, the second to 2, and so on. We can also use negative numbers as index values, where 1 is represented as the top element of the stack, 2 is the element below the top of the stack, and so on.LUA provides a specific set of functions for checking the type of returned elements, such as:int Lua_isboolean (lua_state *l, int index);int lua

At the beginning, I learned about network technologies. I only know that hosts in different network segments cannot communicate, but I don't know why. I have learned some of the truth through continuous learning recently. Now I want to talk about my views: The following content is based on the following experiment topology: Two hosts, PC1 PC2, are connected to a switch in the middle. The IP address ranges of the two hosts are different, as shown in

safe as using webmasters method to update are safest) so I reNamed back the update folders to original names and restarted the PC and MUX. I opened Hhtwin through DAS standalone and Surprise Surprise, it updated the MUX after opening hhtwin:The update happened even though I had not inserted any batteries in the SD connect! After the update, the MUX rebooted and Hhtwin were working perfect!For SD connect C4 firmware update, I referred to:http://blog.mbstarshop.com/2015/08/25/ instruction-for-upd

[Graphic tutorial] use the IRC channel of the red Linux forum on Pidgin to communicate with you in real time-Linux general technology-Linux technology and application information. The following is a detailed description. [I = s] This post was last edited by dabao ,. Note:1. Liu Chong is the Founder. For more information, see here. However, due to the fact that few people are involved, I am trying to submit a new graphic tutorial. I hope you can part

://cordova.apache.org/docs/en/5.0.0/OC Third party Webviewjavascriptbridge; This is a well-encapsulated OC Open-source small framework that provides 2 sets of methods for calling each other between OC and JS. This is more suitable for mixed projects, OC-based projects. Refer to the Web address on GitHub at Webviewjavascriptbridge :Https://github.com/marcuswestin/WebViewJavascriptBridgeThe fourth method, in the WebView agent according to the Automatic URL protocol js tune OC, not very recommend t

;Importjavax.websocket.server.ServerEndpoint; @ServerEndpoint ("/zqq/echo") Public classEchosocket { PublicEchosocket () {Super(); } @OnOpen Public voidOpen (Session session) {SYSTEM.OUT.PRINTLN ("id" +Session.getid ()); } @OnMessage Public voidmessage (Session session,string msg) {System.out.println ("SessionID" + session.getid () + ":" +msg); }}At this point, write the client echo.jspImport= "java.util.*" pageencoding= "UTF-8" iselignored= "false"%>At this point the program is deployed to Tomc

); sin.init (input); var resp =" ";d o { resp = Sin.read (512);} while (resp = = ""), while (sin.available () > 0) Resp + = Sin.read (+); Console.log (resp); }, onstoplistening: function (socket, status) { }}Start the listener.Serversocket.asynclisten (listener);Write another Java to test, the code is simple, create a new socket request and then send a string try {Socket socket = new socket ("localhost", 9638); OutputStream outputstream = Socket.getoutputstream (); O Utputstream.write ("D

f:string = "Changedocumenttitle";Externalinterface.call (functionname:string,parameters) can call JavaScript functionsParameter 1:functionname– the JavaScript function name you want to call in the form of a stringParameter 2:parameters– parameters that need to be passed to the JavaScript function, separated by commas, are optional.var getjsvalue:string = Externalinterface.call (f, "New Title");Received_ti.text = Getjsvalue;}]]>Index.htmlData sent to as:Receive As Data:Track:http://www.blogjava.

[Switch] LoadRunner uses Libmemcached to communicate with Memcached During a big data test that includes services, you need to use a fast and large-capacity database. You can consider a relational database or a key-value cache database to create a cluster. LoadRunner: the C language has been completed. Today, I tried to operate Memcached in LoadRunner and use Libmemcached. First download the source code:‍Http://svn.coderepos.org/share/l

How to communicate with different vlan segments of a layer-3 switch can be achieved through the layer-3 function of the layer-3 Switch, that is, route forwarding. For example, PC1 (192.168.255.2/24) is connected to GE0/0/1 PC2 (192.168.254.2/24) connect to GE0/0/2 int GE0/0/1 belongs to vlan 2 int GE0/0/2 belongs to vlan 3 both port link modes are access from above two ports Layer 2 can be found to be disconnected; three-tier Forwarding is required. H

(); } }); } @Override protected void OnDestroy () {Super.ondestroy (); MbackgrouNdthread.exit (); } private Final Handler Muihandler = new Handler () {public void Handlemessage (Message msg) {switch ( Msg.what) {case SHOW_PROGRESS_BAR:mProgressBar.setVisibility (view.visible); Break Case HIDE_PROGRESS_BAR:mText.setText (string.valueof (MSG.ARG1)); Mprogressbar.setvisibility (view.invisible); Brea