In brief, the basis for designing analog hardware and considerations for digital hardware and software that could be applied to interfacing large-scale simulator/trainers, which use the centralized digital processor concept, have been presented. The scope of coverage was of necessity limited by space.

Even with the limited scope of coverage, it can be concluded that the digital smoothing techniques presented here should be considered in detail for any and all large-scale simulator/trainers because:

1. Substantial economic savings are realizable and

2. Judicious applications of techniques as set forth would permit expanding the capability and scope of present trainers way beyond the realms that are realizable when very little consideration is given to interfacing techniques.

In closing, it is conceded that there must be even other considerations for interfacing-an area characterized by neglect-that would lead to further advantages.