Research In Digital Logic Virtual Laboratory Based On Java

With the revolution of high education and rise of number of student, the universities are puzzled by teaching of experiment. The main representations are deficiency of institutions, limitation of teaching time and place, backward in means and content of experiments. With the improvement of network technology and computer, virtual laboratory that takes full advantage of computer resource become an important choice of serving these problems and improve the quality of teaching.This topic built a digital logic virtual experiment operation platform which is lifelike, convenient as well as interactive and also carried out a simulation to the digital logic experiment. The system highlighted the ability and the effect of the logic circuit testing and exploit visible technology and the virtual technology to simulate all kinds of operation buttons, bulbs, potential input point, LEDs, chips , Groundings, Power lines on the platform. Through the correct computation model and the corresponding algorithm the whole system experiment process as well as the experimental phenomenon simulation, produced the realized the visible effect, conforming to the objective law, and brought about the good interaction between the user and the hypothesized space.We selected an object oriented Java language, and choose Microsoft Access Database, and adopt JDBC to link the database.This thesis first analyzed the difficult problems universities have in experiment teaching. To reduce the press, people take measures to improve the teaching conditions, raising the teaching quality and supplementing the teaching by simulating experiment system. Then the thesis made a conclusion concerning the research into simulation laboratory home and abroad. It proposed the idea that a digital logic simulation laboratory should be built on the base of analyzing advantages and disadvantages and introducing the digital logic experiment actuality in our university, software would replace hardware and the whole experiment process would be simulated by programming. A design plan was made based on the analysis of the objectives and functions of the laboratory; the design of the major links is given in detail according to different module requirement. At last, the thesis carried out a complete simulation of using the chip 74LS49 light diode to show the figure "45" with the presentation of experiment data processing the fruit's shape of outcome, as well as the storage and delivering of the experiment items.