nd by drive elements that interface with external equipment, at the other edge. 12.2.1.1 Client-Server Architecture Implementation for Internet (Figure 12.12) was oriented on Microsoft systems (Internet Explorer browsers and Microsoft Mobile Explorer, Front-Page for Web site development, etc.). For WAP pages accomplishment, one can use, for instance, Nokia Mobile Internet Toolkit or any other similar package. At Client level Web (or WAP) forms were used to post stimuli and configura- tions toward the work-bench (see Figure 12.13 for an example related to the Device- Under-Test, "DUT," Junction Field-Effect Transistor-N-JFET). Tele-Measurement Services for m-Learning VELab Web site Virtual instrument Virtual electro laboratory N-JFET Virtual electro laboratory P-MOS-FET N-JFET P-MOS-FET DIODES DIODES Local area network http://193.254.231.38/VELab Web server Workbench server NI DAQ PCI-6024E National instruments Diodes DAQ connector Silicon/Zener Relay bench N-JFET P-MOSFET Devices under test Figure 12.12 DAQ-based architecture for remote measurement. At Work-Bench Server level, the LabVIEW program runs (in "Continuous" mode), in an instrumentation-oriented implementation that processes the stimuli, controls a relay bench and the automated measurement (whose results are incorpo- rated in a .html file published by the virtual instrument directly on the WebServer, by a simple local link (in "Network Neighbourhood")-avoiding in this way expen- sive solutions such as "Internet Toolkit" for LabVIEW (with extra problems of spe- cific methods-for example, "Run-Time Engine"-incorporation at Client level). <html> <head> <meta http-equiv="Content-Language' content="en-us"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta ame="GENERATOR"content="Microsoft FrontPage 4.0"> <meta same="Progld"content="FrontPage.Editor.Document"> <title>Results</title></head><body><p><fontface="Arial">U1= : U2= ;</font></p: <p><imgborder="0"sic="pagina3.gif"width="275"height="107"></p> <p><a href="index.htm"><fontf