linux下面难得的一个关于电子海图的文件源码，希望大家能够用上。-linux following a rare source documents on the electronic chart, I hope we can spend.

本文从学习者的角度出发，分别描述了下面几部分内容：arm编程的基本至少，boot代码的流程和功能分析，os中断程序的编写举例和boot代码的流程图。-Starting from the perspective of the learner, respectively described in the following sections: ARM programming basic at least, the processes and functions of the boot code an

Visual Basic 制作的形象的动态三维饼图。-Visual Basic production of the dynamic three-dimensional pie chart image.