Many technologies besides microcomputers and videodiscs have been and are being used effectively in education, and this article provides an overview of the current utilization of a variety of educational technologies. Existing technologies are categorized according to their accessibility, whether used locally or over a distance, and their capability, whether primarily audio and audiographic, computer, or video. The technologies and their typical applications are explored, using an approach which follows the developments in hardware and their uses in education. Audio and audiographic technologies discusssed include radio and audiotapes, telephone, three categories of telewriters, slow-scan television, facsimile, and educational telephone networks. Computer-related topics include expenditures for computing, trends in computer hardware, availability of computers, computer-based instruction, course materials, small and large-scale evaluations of computer-based instruction, computer-assisted testing, and computer conferencing. Video technolgies described include broadcast television, Instructional Television Fixed Service systems, satellites and cable systems, video recording media, and evaluation study results. An extensive 68-item reference list is included. (LMM)