Nowadays an enormous change has occurred in both the embedded operating system and its application program module , into which the underlying ideas and principles of component design have been dynamically introduced . in contrast with the traditional one characterized by a fixed architecture , the updated embedded system features flexible structure 嵌入式操作系統(tǒng)及其應(yīng)用程序模型已經(jīng)發(fā)生了很大變化,組件化的設(shè)計(jì)思想和設(shè)計(jì)原則,已經(jīng)被積極地引入到了嵌入式系統(tǒng)中來,與傳統(tǒng)的嵌入式系統(tǒng)相比,體系結(jié)構(gòu)由固定變?yōu)殪`活。