f 
These are: 
1) The AP/C with the Bendix Computer 
2) The AP/C-3 with the IBM 1130 Computer 
3) The Bendix Research Facility 
3.1 A P/C Sof t ware 
The AP/C-Bendix Version is important, because it is the one 
according to which, x^ith m inor modificati ons, also the AP/Q-3 
programs have been developed. 
The AP/C~program has essentially been developed around the 
panel as a principal control device (see fig. 1) 
Fig. 1 
The AP/C Program Structure 
The panel in turn has been designed for operational comfort 
There are the following input possibilities from the viewer: 
1. The handwheels for x, y (real time input) 
2. The footdisk for z (real time input) 
3. The veltropolo v, oC ; «4 is set by an angular control, 
v by a lever 
4. The incremental control knob, by which up to + 15 or 
- 15 bits may be added in timed increments to a coordinate 
or a constant addressed on the panel depending on the 
knob setting 
» 
5. The clear - 
replace - 
add - buttons on the panel by which coordinates or 
constants may be changed, the latter with 
the aid of dialed number settings.