The connection between multimedia learning and technology is usually made because advances in technology often make the use of different media easier and less expensive for schools and teachers. This is demonstrated by the use of overhead projectors in the classroom. Initially these projectors allowed teachers to go beyond the limitations of the chalkboard and present ideas in writing in a way the entire class could see more easily. Technology has advanced beyond the older projectors, however, and modern smart boards and digital projectors allow a teacher to type at a computer and have it displayed for the entire room to see.