说明：  原文《The Defi nitive Guide to the ARM Cortex-M3》，此书为中文译文《CM3权威指南》，是学习arm最新内核cortex-m3的利器，译者 宋岩 文风幽默，使我们学习arm内核变得不再枯燥，强烈推荐。
(The original " The Definitive Guide to the ARM Cortex-M3" , as the Chinese translation of the book " CM3 authoritative guide" is the latest kernel learning arm of the cortex-m3 weapon translator Yan Song humorous style of writing, so that we can learn core variable arm was no longer boring, strongly recommended.)