0 data transmission module, the hardware design, the design process of firmware and client applicationprogramme has been put forward.
0数据传输模块，阐述了系统的硬件设计、固件程序和计算机端的应用程序设计过程和设计方法。
2
Principles and calculation method were described of polygonal line setting and positioning of new sample plot. Applicationprogramme was appropriate for field work and could increase work efficiency.
叙述了新设样地折线测设定位方法的原理及计算方法，编制了适合于外业调查使用的计算应用程序。
3
At last, the programme source and application of surround sound system are presented briefly.