usingSystem;usingSystem.IO.Ports;usingSystem.Linq;usingSystem.Text;usingSystem.Threading;namespaceDAL{publicclassAsySerialDal{privatestaticreadonlyobjectsyncRoot=newobject();constintCOMDAL_RECVBUF_SIZE

DSiscalleddatasegmentregister.Itpointstothesegmentofthedatausedbytherunningprogram.Youcanpointthistoanywhereyouwantaslongasitcontainsthedesireddata.DS叫做段寄存器,指向当前运行着的程序的数据段.你可以把它指向任何你想要的地方