| Experiment teaching is that students use certain instrument and equipment to carry on the independent homework under the guidance of teacher, observe thing and take place and change of course, seek law of thing, in order to obtain knowledge and a kind of teaching method of technical ability. Equipment of laboratory as one school teaching, important sign of the scientific research level usually, so laboratory construction should base on high-level, high starting point, follow the international most advanced level, use the new technology, new knowledge, thus in order to train high-quality talents with innovation ability, create the fine experiment environment. However, the technological laboratory of school electron at all levels at present, existing some of routine equipment has already worn out, lag behind relatively on some technology, some functions that some instrument and equipment have been only used among them in teaching, a lot of functions can not be used; On the other hand, some function that need possess, take to purchase the new equipment. At experiment teaching, experiment renewal of content can form to instrument new demand, cause the stand-by of some instruments too. Experimental facilities and inflexible experiment that lag behind mode difficult to shift students' initiative and creativity, thus restricted the development of experiment teaching and improvement of personnel training quality to a great extent, it is imperative in teaching to reform the traditional experiment. It is one of the ways to solve this problem to adopt the technology of the Virtual Instrument. The concept of the Virtual Instrument was put forward in the middle period of the eighties by the national instrument company (NI) of America. The core of this concept is that the hardware which regards computer as the instrument is supported, fully utilize intellectual functions, such as computer unique operation, memory, playback, transferring, showing and file management, etc., make it conbine with the PC together and combine traditional specialized function software of instrument, it is totally the same as traditional hardware instrument from appearance to function to form one like this, can enjoy brand-new instrument system of resources PC quick-witted fully at the same time. The thesis make brief summary to Virtual Instrument at first, then deep to probe into Virtual Instrument software and hardware platform of laboratory, key research based on Virtual Instrument digital oscillograph and signal generator develop on this basis and long-range Virtual Instrument implementation technique of system. Chapter one, background, meaning and job done of a thesis of studying in brief introduction. Chapter two, sketch the concept, composition and advantage of the Virtual Instrument, then probed into and carried on the tool that the Virtual Instrument developed at present, and confirm developing instrument LabVIEW of the thesis finally. Chapter three, carry on the discussion from making up the software and hardware platform of the Virtual Instrument laboratory. Among them, the hardware platform includes DAQ Virtual Instrument, GPIB Virtual Instrument, VXI Virtual Instrument, PXI Virtual Instrument, USB Virtual Instrument and the Virtual Instrument of IEEE1394 interface and RS-232 Virtual Instrument, the software platform includes VISA storehouse, instrument driver, application software. Chapter four, it is a content of key research of this text. At last chapter Virtual Instrument software and hardware research foundation of platform, utilize the strong function of LabVIEW to make a digital oscillograph and a signal generator. Oscillograph that thesis develops this besides showing the function in basic...
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