A <a href="https://en.wikipedia.org/wiki/Computervision" class="extiw" title="w:Computervision">w:Computervision</a> Inc. CADDS3 <a href="https://en.wikipedia.org/wiki/computer-aided_design" class="extiw" title="w:computer-aided design">w:computer-aided design</a> system being used to create a <a href="https://en.wikipedia.org/wiki/piping_and_instrumentation_diagram" class="extiw" title="w:piping and instrumentation diagram">w:piping and instrumentation diagram</a> in a training lab, circa 1979. The display incorporated a Tektronix 19" storage tube. The graphics tablet was used for drawing and to enter command shortcuts. The <a href="https://en.wikipedia.org/wiki/ADM-3" class="extiw" title="w:ADM-3">w:ADM-3</a> terminals in left background were used to enter commands.
<a href="//commons.wikimedia.org/wiki/User:ArnoldReinhold" title="User:ArnoldReinhold">ArnoldReinhold</a>
<span class="int-own-work" lang="en">Own work</span>