Abstract
A diagram is developed which classifies man–machine system displays according to their complexity. This diagram aids in gaining a better understanding of display concepts and in adding to our knowledge of display design. Displays are categorized as elementary, intermediate, or complex, depending upon the complexity of instrumentation required for implementation. The elementary group contains the pursuit and compensatory types while the complex group contains the new contact analog and situation types. In the intermediate group are new predictor types which are useful when controlling sluggish dynamics. Several general guidelines regarding the design of displays are obtained from the display diagram. These guidelines aid in selecting those displays which may be suitable for a given man–machine control-system problem, thereby reducing the amount of display experimentation that must be performed.
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