numeral control
4.Using Computer Aided NC Programming and Direct Numeral Control(DNC) technology, connected the CAD/CAM system of the software of CADCEUS that is the product of UNISYS(Japan) and machine center (such as ARROW75O which is the product of Cincinnati Milacron corporation , MCV-A11 which is the product of OKUMA corporation)fluent in order to meet the demand of reality of mould and die manufacturing.
6.Results The total scores of the sub-health group were significantly lower than those of the normal control group(P<0.01),regarding to numeral identification(P<0.01),quick comparison of Chinese characters(P<0.01),mental arithmetic(P<0.01),numerical work memory(P<0.05)and rerecognization of double-character phrases(P<0.05),etc.

