The purpose of this research is to develop a computer - aid system which could automatically inform the department which needs blood bags by using barcode to check whether the blood bags is for the right patient 本研究目的在研发透过医院内部网?与电脑通知用血单位?血,使用条码?交叉核对?血人员所?取的血袋是无误的,避免?错血袋的错误发生。