This thesis proposes an application programming interface (API) that facilitates programmers to develop any application to connect with terminal emulator interface that will be readable by screen reader program. Using screen scraping technique, the document object modeling method (DOM) is utilized in the API development to categorize on-screen data in terminal emulator into object forms. The thesis also provides the tool to generate terminal emulator screen interaction model to store data in xml file type. By using this API and the tool, application development can be completed without any expertise in the legacy system because the data will be collected by skilled users and the rest will be automatically handled by the tool. This thesis compares the proposed API with the EHLLAPI (Extended High Level Language Application Programming Interface). The experiments are divided into 2 parts. The first part is to compare the process of coding and the second part is to compare the number of lines of code. The results show that the proposed API is very effective at minimizing the steps of programming deployment while reducing coding tasks.
