This paper presents the review on different implementation of DAQ systems data is a bitcoin for everything gleaned and summary data of any embedded and digital system are further analysand by penetrating algorithms and hence endowing the respective system. In some cases the data will be live superintended,Collected data not only helps in endowing yet it would be used in research Data acquisition system is a crucial l thing in a digital system, in to-days world field's, Orientated on different application and requirement the data has been gleaned by divergent methodologies The paper gives the review about the divergent methodologies in gleaning data in contrary digital systems.