Evaluation Of Digital Library's Usability Using the System Usability Scale Method of (A Case Study)

The benefit of Information Technology (IT) has spread to almost all fields, including in libraries. IT applications in libraries are the automation of libraries and digital libraries. Digital library or digital library system is the concept of using the internet and information technology in library management. Many libraries have implemented digital libraries, one of them is E-Perpus belongs to Depok City. E-Perpus contains digital books that can be accessed online 24 hours, anytime and everywhere. However, when an application has been launched, it is necessary to evaluate to find out how effective, efficient, and satisfying the application according to the user, what obstacles they might face and the feedback given later can be a benchmark for improving the performance of the application so that it is better in the future. Therefore, in this study, we will conduct an evaluation of usability using the System Usability Scale(SUS) to find out the effectiveness of SUS to evaluate the usability of the system. The results of the evaluation show that the SUS score of E-Perpus is 69.6. It is indicated that the application was included in the Marginal High, OK category, and a D predicate. In addition, for its relation to the Net Promoter Score, it shows that users have the potential to become Detractors where they feel less satisfied with the product or service and can have a negative effect on the brand by a negative review.