to measure the nurses need for the Hospital Information System(HIS) and identify the change of nurses' attitude toward computerization in pre and post HIS implementation.

Prospective survey using repeated measures design. The subjects were 166 nurses working at surgical units in a tertiary and teaching hospital. Questionnaire was developed by researchers based on the Stronge and Brodt s study (1985). Cronbach' s coefficient was 0.80.

Nurses' attitudes toward computerization were positive in pre and post Hospital Information Systems. Favorable attitude of staff nurses significantly increased after computerization. Those who were higher position, highly educated, and working longer at their hospital had more favorable attitude toward computerization. Nurses wanted a computerization of works related to laboratory tests and order check most. After computerization, nurses evaluated works related to laboratory tests and order most convenient.

Appropriate reflection of nurses' need on computerization improved their favorableness towards computerization