COMPUTER READOUT DEVICES FOR DATA ABOUT THE GEOMETRY OF AN OBJECT,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The operating principles of graphic data readout devices for computers are briefly reviewed. The first Soviet devices of this type are mentioned and the general requirements for graphic output devices are formulated. In 1959 the Institute of Automatics developed the first device for reading out information on the geometry of an article from an interpolater. The drive consisted of miniature step motors which rotate the lead screws and the moving parts. The control system was open discrete, the unit step was 0.2 mm, and the displacement velocity along the contour was 1.5 metersmin. On the basis of this device, an experimental device for graphic reproduction was developed. Extended exploitation of electromechanical devices for reading out information on the geometry of an article, and the extended investigation of Soviet and foreign units has made it possible to formulate basic requirements which must be satisfied by devices of this type.
- Computer Hardware