displays, vector image generators, film recorders, printers) Graphics workstations (DEC, Symbolics , List Machines , Xerox Alto , Xerox Star , Three Rivers PERQ , Apollo , Hewlett-Packard, Sun , Computervision , Stellar, Ardent , Stardent , Terak ( 8510 , 8510/a , 8512 , 8515 , 8600 , 8604 ),