Any standard type of digital file can be incorporated into a Moodle course site; however, keep in mind:
Students need to have an application that can open the file.
If you are using commonly used file types (see list below), most students will be able to access your files with no difficulty.
If you are using files created with specialized software, such as Photoshop, MatLab, or R, students will most likely need to have that specific software installed on their computer to access the files. You may want to direct your students to access these files from a computer lab that has the specialized software already installed.