I. Overview of Virtual Simulation Technology
Virtual simulation technology is a new experimental research technology which combines virtual reality technology and system simulation technology. It is a humanized and strategic technology. With the help of this technology, we can understand and transform the world, so it is expected to become another virtual simulation technology after mathematical reasoning and scientific experiments. Based on multimedia technology, virtual reality technology, network communication technology and other information technologies, we can build virtual environments that are the same as or similar to real-world objects and environments, such as simulators, simulation software, mathematical models, simulation experiments and so on. Among them, virtual simulation experiment is widely used in the teaching of higher vocational colleges in China, and gradually becomes a new teaching mode.
1. Application of Virtual Simulation Technology in Teaching at Home and Abroad
At present, the foreign virtual simulation software mainly includes PSPICE and PSPICE. Tina Pro for Analog and Digital Circuits, Circuit Maker, a language and simulation software for circuit description and simulation, Proteus, Cisco router, and Boson NetSim, has customized network topology and connection. In China, the electronic information virtual simulation experiment teaching center of Beijing University of Posts and Telecommunications includes "open virtual simulation experiment teaching management platform", envelope software, distributed virtual environment of Beihang University, GMDSS simulation training laboratory, navigation radar simulation training center and so on.
2. Advantages of applying virtual simulation technology to computer basic courses
Demonstrate very abstract concepts through examples, concretize and visualize abstract network concepts, provide vivid learning environment for students, strengthen the interaction between teachers and students, realize the two-way interaction between teaching and learning, and improve students' enthusiasm and initiative in learning. Creating more practical opportunities for students through the demonstration of simulated examples can not only stimulate students' desire for knowledge, help students fully absorb and master the teaching content, but also stimulate students' creative motivation and creative thinking.
Second, the application of virtual simulation technology in the basic course of computer network in higher vocational colleges
1. The application of virtual simulation technology optimizes the experimental teaching environment of online courses.
At present, the updating of computer software and hardware in many higher vocational colleges is lagging behind, and teachers can't carry out experimental teaching normally, so they can only use video, text and other auxiliary materials to supplement the shortcomings of actual experiments. Virtualization technology can effectively solve the above problems. By virtualizing different computer environments, students can switch servers and terminals on one computer and use different operating systems and applications to conduct network experiments. Virtual technology has achieved the purpose of improving the teaching environment and improving the teaching effect in the experimental teaching of computer network course in higher vocational colleges.
2. The application of virtual simulation technology has updated the experimental teaching methods.
Teachers in higher vocational colleges use virtual simulation technology to realize "one computer with multiple functions", which is beneficial to the smooth development of basic practice courses of computer network. Students can accurately understand the operating characteristics and processes of some systems or software, further deepen their understanding of theoretical knowledge, and observe and analyze experimental phenomena at close range.
3. The application of virtual simulation technology has alleviated the problem of insufficient training equipment.
At present, there is a serious shortage of training equipment for computer network courses in higher vocational colleges, and virtual simulation technology makes virtual laboratories a reality. Although it can't fundamentally replace the actual physical equipment, students can do all the operation experiments on the virtual machine. The combination of theory and practice makes learning more intuitive and teaching more real, which not only ensures the teaching quality, but also promotes the cultivation of students' practical ability. Therefore, the application of virtual simulation technology not only solves the shortage of experimental training equipment, but also helps to cultivate more practical talents for higher vocational education.
Three. Concluding remarks
To sum up, there are still some problems in the teaching of computer network basic courses in higher vocational colleges at this stage. Combining virtual simulation technology with real experiments can effectively solve the problems such as the shortage of school equipment and places. Through virtual simulation experiment teaching, students can master network technology, improve their practical ability and innovation ability, improve their comprehensive ability to solve and analyze practical problems by using computer network knowledge, and cultivate high-level and high-quality compound network engineering professionals for the society.