The use of a Decision Support System (DSS) can assist a person in making accurate and targeted decisions. Many problems can be solved by using SPK, one of which is to analyze the recipients of the foundation's annual period of compensation. The method that can be used for this Decision Support System is to use Simple Additive Weighting (SAW). In determining the recipient of foundation compensation, there are many criteria that must be possessed by individuals as a condition for obtaining foundation compensation. Foundations must have criteria to determine who will be selected to receive foundation compensation for the annual period with the aim of helping someone who is underprivileged or excels during their studies. In this study, a case will be raised, namely looking for the best alternative based on the criteria determined by the foundation using the SAW (Simple Additive Weighting) method. The research was conducted by finding the weight value for each attribute, then a ranking process was carried out which would determine the optimal alternative, namely the right student to receive foundation compensation.

Digestive diseases are all diseases that occur in the channel digestion. This disease is a large group of diseases esophageal organs, stomach, duodenum first, second and third part, jejunum, ileum, colon, sigmoid colon, and rectum. Digestive disease need early prevention, in the field of computers how to anticipate can by using an expert system. Expert system is a system that can make conclusions like an expert. Expert systems have many one method is the CBR method. CBR method is a method inference based on the old case. This method can be applied in fields health and is widely implemented in the world of health one to diagnose various digestive diseases. System can do Diagnosis of the disease is based on the symptoms entered by the patient through questions the questions raised by the system and provide information about the illness suffered by the patient.