Digital Circuits And Computer Interface Virtual Experiment System Design And Implementation

Theory and practice teaching of digital circuits and computer interface course intwo isolated environment, the text description of the blackboard theory class, or justuse PowerPoint multimedia teaching methods is difficult to give a true and completedescription of the circuit phenomenon; experiment by the timespace constraints,coupled with the lack of experimental equipment, practice opportunities for studentsgreatly reduced, resulting in theoretical knowledge and practice out of line to hinderthe use of students’ knowledge and innovation.In accordance with the general idea of the analysis、modeling、to achieve. Thispaper first introduces the background and significance, the development trend of thecurrent research progress at home and abroad for virtual experiments and virtualexperiments to determine the direction of the study, the characteristics andshortcomings of the existing similar virtual experiment system is presented the overalldesign of digital circuits and computer interface virtual experimental system ",namely the system functionality, system architecture and system workflow.Then, introduce the object-oriented modeling method, and the overall systemdesign, the use of object-oriented modeling of virtual experiments and key devicemodeling. Focused on the theoretical basis of the circuit model, and programmingmodels and virtual circuit mesh, principles and key technologies.The paper then analyzes the simulation system two core mechanisms: digitalcircuit simulation mechanisms and signal control transfer mechanism. Given digitalcircuit simulation mechanism for implementation, as well as to optimize the delaycontrol to achieve. Compared based on single-threaded and passes control signalbased on multi-threaded mechanism, based on multi-threaded, signaling inmulti-threaded synchronization deadlock. Virtual device properties, methods,descriptions of time, the design of a system of three core classes. And then focuses onthe implementation of the virtual programmable module, including kernel-modedrivers, virtual device drivers, as well as virtual register.Finally, this system of human-computer interaction model and user interface,document editing, file management, and ultimately complete the system development.