trackball :

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  • n  an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen
    a trackball is essentially an upside-down mouse

  • As BlackBerry aficionados will probably agree, the impressive precision and frictionless gliding of a trackball makes clicking on links quicker and easier.
  • The SpaceNavigator isn't a joystick, nor is it a trackball.
  • A tad heavier and narrower than the iPhone, the G1 features a petite keyboard, a handy trackball and a higher-resolution, three-megapixel camera (the iPhone has a two-megapixel .
News & Articles

  • Press Brake includes digital encoders.
    Available in 90–350 ton capacities and 8–16 ft overall bed lengths, Proform+ is equipped with dual pressure transducers on hydraulic cylinders for optimized tonnage accuracy, and digital encoders for ±0.0004 in. ram repeatability. PC-based control is bed-mounted to machine with swinging pendent arm mount and includes trackball and keyboard. Optional Wila crowning system compensates ...
    June 17, 2013 - ThomasNet

  • Om Malik in InformationWeek
    Malik writes, "The Tour has turned out to be quite a lemon. The trackball is behaving like a 300-pound man running up a hill. Tour hangs when I am trying to send text messages or check MLB scores. There is a strange clicking sound that accompanies...

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