This paper gives the system design diagram, and made a detailed explanation to its structure and the basic principle. System consists of hardware and software design, hardware part mainly includes S3C2410, Flash, SDRAM memory interface, the software includes the compilation and transplantation of Mplayer, the QTE graphical use interface design and transplant. At the same time, this paper also studies the key technologies of the system software, including Bootloader design, kernel cutting and root file system design. Finally, the actual effect of the system is given, implement the thought of VOD, achieve the design purpose of the system. The system can make the students online learning at any time, relieve the teaching difficulties effectively, the system combine embedded technology and streaming media technology, it has the advantages of small volume, convenient operation, low cost and good stability.

The system designs wireless remote control airplane model, operatie the keys of the remote controller, after the model aircraft receiving the instruction, and handle through the ARM, control the aircraft forward or backward. While the aircraft are working turn left and turn right and straight line, the system makes a judgment on the ultrasonic feedback information, and then control the aircraft’s direction of movement, and display the corresponding information on LCD. after several debugging and operating, System can work stable and reliable. This model can be widely used in the industry and agriculture and daily life, The model can be used in remote wireless detect, and market prospects.

This design use Java technology to develop a separate interactive online answering platform, the system integrate common network teaching tools and most online interactive function, provide interactive online answering for teachers. Once teachers enter their own relate courses web pages, it has been easily built a full interactive online answering platform, In this system, including three subsystems: student terminal subsystem, teacher terminal subsystem and management terminal subsystem. Among them, student terminal subsystem is mainly provide student to login and participate in question-answering, teacher terminal subsystem is mainly provide teacher to login and manage their own student and question-answering, management terminal subsystem is mainly manage related and content users. After the test of practice, the systems practicability is strong, it can better solute the courses exchanges between teacher and student.

Ultra-small Chip Power Inductors play an important role in the new TFT-LCD, OLED and other display equipment and other high-end electronic equipment, there are many problems in the traditional power inductors,design and manufacture the small inductor has a very important significance, from small-scale processing, positioning assembly processing, and combine surface and the point welding processing, a whole forming handle, bulk welding and bulk dispensing processing six aspects in designing and manufacturing, practice has proved that take this design, suitable for mass production, can greatly improve the productive efficiency.

At present, the water resources is increasing attention, water quality monitor and purify is widespread attention. The system uses sensors to monitor water, if the water contains excessive metal minerals or water turbid, the sampled data input SCM to process, MCU sends control signal, and motor start to work, pumping the water out and purify, and then monitor the purified water, if the water unqualified, and then purify again, until the water is qualified. The system also sets up a sound and light alarm and screen display, for prompting monitor information. The system is practical, it has guidance and reference for actual water quality monitor and purify.