I Summary Preface

        In fact, I have long had the impulse to sort out my knowledge , I have written some articles before , Later, because I was lazy , I didn't insist on writing , Later, they were simply deleted , Because I think my strength is not enough , There's nothing bad about it , I still feel ashamed , But recently, the content of learning has become more and more complicated , If you don't do a comb , After that, many contents will start to be confused , Then a system can not be formed , So from today on, let go of shame , I decided to take a good look at the knowledge I have studied hard for so many years , Just a record or a share , Anyway, as long as you keep doing this , There will always be new knowledge to learn , The major branches that we have decided to open for the time being are 51 Single chip microcomputer ,32 Single chip microcomputer ,C Language foundation ,linuxC,linux drive ,linux kernel ,vxWorks, Hardware foundation ..... Maybe more , There are a few small projects for everything , It will be put up later , Anyway, I have a lot to learn now , There must be something to write after learning all the time , Okay , Don't say the , The first chapter begins .