The Design Of Portable Learning Machine Terminal For Training

In current education realm, the educational modernization needs a technical modernization, thus, the embedded techniques based on the computer science places an important role on the information-based education and increases current education quality.In the past 10 years, learning machines made of single chips become the crucial parts of the school's electronic teaching equipments. A great deal of teaching instrument perfects the students teaching environment, raises the students' interest and their study efficiency. This essay puts forward the scheme to build a kind of learning system based on double-core that brings out a method to the occupation education. This reduces the cost of the PC machine and at the same time the student can improve their typing skills.This article discusses a kind of embedded system, analyzes the necessity and advantage, the display module, the keyboard module, ROM module and the RAM module are all on the same bus. When it comes to the problem of the usage of 128 Kbytes SDRAM, this text tells the hardware conjunction principle and how to switch between the high and low 64k bytes space .This paper draw a method for the LCD display function and it's connection.. The method carries on a detailed description with the principle in the text. By describing the NAND-FLASH conjunction method of the module and how to use it ,the readers can understand the characteristics of the FALSH module, All the programs are put in the FLASH of CPU and the NADN-FLASH. When the system starts up , the programs in different read only memories can be read out and be executed. The system drives LCD module to display information, to receive the typed-in information and to save the message.For this complicated software system, this article emphasizes to discuss how to transplant the UCOS-II operating system to the MCS-51 system, and how to build up corresponding drivers of the modules. This paper discribes the importance of building this software system.When this research is completed, the system can build a double-core MCS-51 system ,to which LCD, RAM, NRAD-FLASH, NOR-FALSH, the keyboard interface are connected.When using the operating system UCOS-II, the stability and efficiency of the system go well, and it builds a good software flat in the future for the development of the other modules.