The module is a book written with the aim that students can learn independently and in the module contains the basic components of teaching materials so that students can understand easily. The advantages and disadvantages of the module are that students can learn independently using the module and the teacher is no longer the only source of learning for students. Education has used various ways in theteaching and learning process. One of the general users of website users in public schools is the use of web-based learning aplications that contain tutorials, exercises or vidios that are developed and uploaded to web. 

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.

Perpustakaan merupakan bagian dari sumber belajar yang harus dimiliki oleh setiap sekolah atau perguruan tinggi. Karena siswa dengan mudah mencari informasi atau pengetahuan melalui perpustakaan. Dengan berkembangnya teknologi, orang berpikir untuk dapat bekerja lebih efektif dan efisien. Tujuan dari penelitian ini adalah membuat sistem informasi untuk mengatasi keterbatasan tersebut guna meningkatkan pelayanan kepada pengguna perpustakaan dan memperlancar proses administrasi menjadi lebih cepat dan akurat. Perancangan sistem informasi perpustakaan berbasis web ini diharapkan dapat meningkatkan pelayanan perpustakaan secara maksimal dan kesalahan dalam pengolahan data. Sistem informasi perpustakaan meliputi pendaftaran anggota, pencarian buku, data buku, peminjaman buku, buku, dan denda keterlambatan pembayaran buku.

The growth rate of internet users in recent years has increased very rapidly and is growing rapidly. This triggers the creation of a new business model in the form of a marketplace that is used to buy and sell goods. This study aims to load an online store that is simple and lightweight but can meet the needs of sellers who use this website.
Application development uses methods while the prototype in modeling the application uses use case diagrams, class diagrams, activity diagrams, and sequence diagrams. The research is expected to produce a web-based marketplace application that facilitates the transaction process of consignment providers and consumers at the Indonesian Helmet Shop.
Furthermore, the design of this messaging service application prototype still needs to be developed in terms of user interface and user experience so that consumers can be more comfortable in transacting.

ABSTRACT
A web-based futsal field reservation system was developed to help facilitate the process of booking or leasing a futsal field. The system uses PHP and HTML programming languages by using MySQL as data storage. The purpose of designing this system is to make it easier for users to rent futsal fields. With the futsal field reservation system is expected to facilitate in data processing, scheduling and registration of members or customers. In the end, this system is expected to help the company's performance, and can also facilitate customers in the ordering process.