Abstract
The automated instruction as developing CAI are reviewed from such a standpoints as man-machine interface and the direction of CAI research and development are suggested conceptually. Man-machine ineterface are divided into four main problems, namely, interface logic, interface language, interface device and interface space design. In the former two problems known as software are most important in the design of adaptive, optimal and intelligent CAI system. The author suggested that the logic itself must become the artificial intelligence teacher in near future. The later two problems mean the hardware including machine and structure of architechure to set up CAI system. which should be considered human factors.
