Expert systems (expert systems) in general is trying to adopt a system of human knowledge into a computer, so the computer can resolve the problem as was done by the experts. Or in other words, the expert system is a system designed and implemented with the help of a specific programming language to be able to resolve the problem as done by experts. In this case I tried to implement an expert system to diagnose sexually transmitted disease from the symptoms and the causes of Sexually Transmitted Disease. The purpose of this paper is to build a knowledge-based system on Sexually Transmitted Disease using backward chaining method that will be displayed in the form of a website using PHP programming and MySQL database.

The eye is one of the five senses that has a very important role in human life, namely as the organ of vision. If there is interference with the eye or there is a disease, it is very influential on human vision. Its mean that we can conclude that eye is very important in our lie and must be keep for our body.  The purpose of this research to planning and develop the diagnose of expert system about diagnosing of diseases in the eye which include disease information about symptoms or the solution and have role to replace and imitate the process of the reason from an expert in solve the specification problem. the method used for reasoning is forward chaining method. The result of this research is expert system of diagnosing eyes diseases in humans which computerized who can be used for giving information and have benefit in diagnosing disease.

Technology is one of the developments in education in the world, including in utilizing technology in the world of education. Senior high school national exams and their equivalents make use of technology in their implementation. however, the use of technology has not been mastered by students in Indonesia. it is necessary to carry out a simulation in facing the national exam. This community service provides facilities for partners in conducting trials to take the national exam. multimedia applications provide an interactive effect between students and computers. which makes it easier for students to understand the meaning of the questions given on the exam.

Assisted Decision System is an intellectual from human resource and computer capabilities to correct decisions in helping or replacing it in general, therefore the system will give a precise and accurate decisions in organizing scholarship data for them who really worth. Technique For Order Of Preference By Similarity To Ideal Solution is a method that had a concepts which the best chosen alternative. Not only has shortest interval from positive ideal solution, but also has the longest interval from the negative one. Used criteria in this system is variable according to scholarship provided by Institusion.

The eye is one of the five senses that has a very important role in human life, namely as the organ of vision. If there is interference with the eye or there is a disease, it is very influential on human vision. Its mean that we can conclude that eye is very important in our lie and must be keep for our body. The purpose of this research to planning and develop the diagnose of expert system about diagnosing of diseases in the eye which include disease information about symptoms or the solution and have role to replace and imitate the process of the reason from an expert in solve the specification problem. the method used for reasoning is forward chaining method. The result of this research is expert system of diagnosing eyes diseases in humans which computerized who can be used for giving information and have benefit in diagnosing disease