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Internet technology is currently developing rapidly, the need for internet in the community in the current era of the COVID-19 pandemic is increasing because studying and working can be done at home. By utilizing technology, processing customer bill payment data will be faster because of the ease of use. To support the implementation of this inseparable development of Information and Technology, a website-based internet bill payment system was created with the aim of making it easier for customers to make payments and check payment history and provide convenience for the field of collection in checking accounts receivable data so that they can be followed up in accordance with standard operating procedures. applicable. So that customers feel comfortable because they don't need to be constantly reminded regarding missed payments. The design of the internet service bill payment system is described by Data Flow Diagrams (DFD) and Entity Relationship Diagrams (ERD). The design of the system prototype uses the PHP programming language and the PostgreSQL database. From this study, it was found that the website-based internet bill payment system was running well. In appearance, the website is responsive to many browsers. Meanwhile, in terms of functionality, the system can perform the functions of each feature.

PT Garuda Surya Raya is a company engaged in the supplier of smartphone boxes. Inventory recording is still done manually, there is often a discrepancy between the number of goods in stock and the physical goods in the field. So that there is an error in the amount that results in delays in ordering goods and delays in the production process. Based on the above problems, the research objective is to design a web-based inventory information system at PT Garuda Surya Raya. The method used in this research is the FIFO method and the waterfall development system. Starting with looking for problems, suggestions, and needs from the warehouse admin. Then it is implemented and the system is tested to find out its weaknesses. This system was built using PHP and MySQL as the database. The results of the research are the system can simplify the process of recording incoming goods, and outgoing goods, recording stock opname, and making reports.

A mental illness is a syndrome, psychological, or behavioral disorder in which a person is dysfunctional at work. The problem is that medical personnel or doctors who are professionals in the field of psychology are not comparable to mental illness, especially teenagers. The initial diagnosis by web based and using the Extreme Programming (XP) method. Meanwhile, the main objective of the research is to determine the quality of the web system based on the perceptions of respondents, namely Darul Ihsan Vocational High School students. Measuring the quality of an expert web system using the WebQual instrument. There are three aspects of WebQual that will be measured, namely: usability, information, and interaction quality. Based on the questionnaires distributed to respondents, the expert web system was developed to fulfill the three aspects of WebQual (usability, information, and interaction, with a score of 83.78%, 80%, and 82.97% in the good category.