In order to explore the useful information of frequency-domain signals,a new method was proposed,in which the spectral power of various frequency segments was taken as an independent information source to calculate its information entropy.

This paper was to establish a model regarding codes as information source based on C.

With the background of the marketized and industrialized media, news informer is the produce of the phenomenon that media competition manifests the importance of the information sources.

In this paper,the features of binary source of the large LED information displaying system are researched through statistical method.

In view of particularity and complexity of the large-scale venue construction projects,a quantitative and efficient way was urgently needed to make the clients\' design risk management play an important role,information entropy was used in the risk management because it was fundamentally characterized by measuring the uncertainty of source.