Monitoring the identity of library visitors is a very important part. Usually to monitor students who are diligent in visiting the school library by providing books or guest books, the purpose of this study is to record the identity of students who visit the library electronically, in the study describes the monitoring system for library visitors with internet communication lines, database storage media by using descriptive method. The design of this system consists of a library card, RFID, Nodemcu, 2 x 16 LCD, and a web as an application used to process visitor identities or as a place to display information in real time. The web application design uses the programming language HyperText Markup Language (HTML), Cascading Style Forms (CSS), Hypertext Preprocessor (PHP), Content Management System (CMS) using a MySQL database while the test results show that this system can work well, with the The school library visitor monitoring system using internet-based RFID and nodemcu can make it easier for employees to view and process the identity of library visitors
ABSTRAKPenjualan online toko sepatu menjadi peluang yang sangat baik dalam dunia E-commerce. Bagaimana tidak, produk toko sepatu yang dijual merupakan produk yang sangat di minati oleh semua kalangan. Produk yang dijual jarang ditemukan bahkan sulit ditemukan. Aplikasi yang dirancang didesain sesederhana mungkin agar mempunyai daya tarik lebih bagi pembeli, pembeli dapat berbelanja dalam waktu yang singkat tanpa harus melewati proses pendaftaran dan proses login. Aplikasi ini tidak hanya mempermudah pembeli dalam berbelanja, namun juga membantu memperluas pemasaran produk bahkan mampu membantu dalam hal laporan keuangan penjualan.
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