Computer assisted learning (CAL) is an old technology which has generated much new interest. Computers can: reduce data to a directly comprehensible form; reduce administration; communicate worldwide and exchange, store, and retrieve data; and teach. The computer's limitation is in its dependence on the user's ability and perceptive nature. Teachers can either ignore CAL and computing or become involved with them. CAL is appropriate: when it is difficult or impossible to teach the use of a topic in another way; in remedial tutoring; and in replacing practical experiments with simulations. Using computers to find information, manage instruction, and for electronic mail and networking can also assist learning. CAL should make maximum use of color, sound, and movement; be visually and intellectually stimulating; involve the user; and supply plenty of criticism, help, and advice. Because information is presently lacking concerning the instructional effectiveness of good CAL, formative evaluation should be emphasized and results of such assessments should be publicized through educational journals and conferences. (LMM)