In the complexity and diversity of modem society, there is an urgent need for an information system which can systematically collect, manage and analyze data. The purpose of this paper is to find the relationship between traits of medical and non-medical staffs with indicators of computer-related effectiveness. In order to fulfill this purpose, dependent and independent variables are extracted from previous findings, and hypotheses are formulated. To test these hypotheses we carried out field research. The sample size which we studied is 203 employees of a general hospital in Taegu. Some of the meaningful findings of this study are as follows: The educational level has a positive relationship with computer usage time. And the attitude about computers has a positive relationship with degrees of satisfaction. Nurses' group especially has the most positive relationship with degrees of satisfaction, and physicians' group, resident doctors' group, pharmacologists' group, non-medicals' group(administrative etc.) are ranked in order of satisfaction.