Today's museum is a major source of relaxation, learning and pleasure for the public. How can a museum serve visitors by letting them know something about what it has to offer before they enter the display areas? And what can it do to reinforce the effects of the displays and insure that their visit will be enjoyable? Advances in technology have made it possible to utilize computers as part of the communications interface between the museum and the visitor, particularly in multi-media and internet applications, and these applications should be utilized as fully as possible in display and educational materials in the museum. The term multi-media is everywhere in print and on the air these days. Multi-media offers highly effective use of sound and light that commands the attention of the viewer and gives it tremendous potential in teaching and recreational applications. Multi-media means multiple media and includes everything from text to graphics, sound, film, animation and other types of visual and audio media. Usually the various media are coordinated through a computer which controls various hardware such as videotape machines, laser disk players, CD audio or CD-ROM and other equipment in a changing mix of pictures, sounds, cartoons, images, film clips and other sources. The aim is to make the communications interface between people and computer as close as the interface between people and people (contact eye to eye, mouth to mouth and heart to heart), with information that can be accessed any time it is needed. In our changing society the museum cannot afford to hold to traditional ways of educating and serving the public. Multi-media with its high degree of editing, compiling, storing and interactive functions can help to improve the quality of service that we offer to visitors. This article touches on topics such as the digitized museum, computer-aided learning and the use of multi-media in digital displays, all of which point up the growing importance of multi-media in the museum. Multi-media services now available in the National Science and Technology Museum include a high-tech outdoor LED display, digital sound systems, a museum guide system using computer monitors and various demonstrations of science and technology. The LED display features sound, images and animation to introduce the museum and current activities for visitors as they are entering the building. Once inside they can take advantage of a guided tour on cassette audio apes as well as the computer monitor guides throughout the facility On weekends and holidays multi-media demonstrations are combined with special props, prepared scripts and even interactive setups for more effective learning in an entertaining and lively atmosphere. Computer technology changes almost every day and offers a variety of applications for serving museum visitors which simply cannot be overlooked. The National Science and Technology Museum is now capable of developing its own scripts for multi-media shows and displays, but our expertise is still fairly limited in some areas. We are working to utilize our existing systems and develop still more sophisticated hardware and software that can be used to translate our many years of experience into even better displays and service to our public.