本文适用于对嵌入式系统没有概念和经验，渴望进入嵌入式系统开发的领域，但又觉得系统太复杂，要学的东西太多，感觉完全无从学起，无从下手的初级开发人员。-This article applies the concept of embedded system and experience no desire to enter the field of embedded system development, but feel that the system is too complex, too man