I signed up for this class for rather simple reasons. I am in my last semester, and so that requires a 400 level course. I did not choose the class at random; I saw this class as an opportunity to gain marketable skills. I hope that I will gain useful skills that I can advertise on my resume and enjoy the process.
Digital history is a way to streamline the process of historical research and simultaneously spread more information to a larger audience through digital means. This frees researchers from traveling to certain locations in order to access information. This digitization of documents, testimonies, letters, etc. creates a greater ease of access to millions. The ability to interact with history in new ways, like the creation of 3D interactive models of historical objects and virtual reality experiences, and digital history is already revolutionizing the field.
Digital Humanities, while intertwined with digital history, is a broader category. It is an area of study that is at the intersection of digital technology and the study of culture. This discipline focuses not on the creation of digital historical resources, but the study of culture and society by means of technology. It encompasses a large variety of practices, such as humanistic computing and social computing, and can be hard to define. Digital history is one of the digital humanities, and so they are not so much entirely different things so much as digital humanities is the house and digital history is a room.