The research of digital screening technology on the existing conditions in recent years was summarized including amplitude modulation screening,frequency modulation screening,and hybrid screening.

The paper proposes an algorithm about digital screening based on Delaunay triangulation.

The digital screening is the kernel technique of map color reproduction and color rendition.

A number comparison task was performed to examine the role of attention in number processing.

The investigation on the mechanism of number processing is one of the hot topics of psychology.

The cognitive process that peoplementally represent the numerical stimulus is defined as number processing.

In addition,it proposes a complete solution of digital encryption according to the security requirements of stations procedures.

This paper introduces digital encryption, digital signature and digital certificate so as to ensure Authentication, Intergrity,Non repudiation in transmission of digital information in electronic business.

So the digital encryption telephone will be widely obtained in the future.

Application of numbers pile up in neural network──Varies resources balance of neurol network;

Recent functional neuroimaging techniques have made it possible to identify more precisely the neuroanatomical correlates of human numerical processing.

When the activation of the JMW was subtracted from the JVM,many areas concerning numerical processing,such as left anterior cingulate(BA32) ,post central(BA2) ,and the right superior temporal(BA39) ,superior parietal(BA7) ,as well as the inferior parietal(BA40) ,precuneus(BA7/19) of the bilateral hemispheres,were significantly activated.