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General Operational Capabilities
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allows the operator alphanumeric keyboard angle application program automated auxiliary menu axis CADD system capability cathode ray tube Chapter circle completed components computer graphics computer-aided computer-aided design constructed coordinate values created cross hairs CRT screen cursor data points database defined design and drafting digitizer tablet discussed display controller electrostatic plotter ellipse endpoints enter entities erase example existing line feature finite element finite element analysis geometric model grid inches input device instructions interactive layer light pen line segments line weight logic pen machine tools manufacturing memory move numerical control object parameters pen plotters point constraint position primary storage printed circuit boards procedure produce require the operator robot rotation screen marker screen menu screen monitor selection shown in Figure solid model Step storage stored stylus surface symbol system automatically tablet menu three-dimensional unit wire frame model workstation