References in periodicals archive
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Each new model has an optical track ball and scroll wheel; the latter serves double-duty as both a navigation and volume control.
For example, a mouse device has buttons and a track ball for sensing the planar motion.
Its thumb-operated track ball and ergonomic contour make cursor movement easy and comfortable, while its second left-click button lets users trigger instead of click the mouse.
Two pointing devices are also available - a two-button touch pad and a stainless steel track ball - which can be incorporated almost anywhere into these boards.
Fierman fitted Hoppe with voice-activated software to operate his computer and an adapted track ball to help him navigate the screen.
black and white monitor, integrated handles for easy carrying, and a full keyboard with large track ball.
One is a battery-operated personal computer for paramedics, who will wear the device across their shoulders and check patients' vital signs and injuries with a handheld track ball containing a video camera and sensors.
Because virtual reality users remain stationary, they use a joy stick or track ball to move through the virtual environment.
While entries may be typed in, most Windows programs rely on a pointing device (such as a mouse, track ball or pen).
Customers operate the system with a track ball and buttons as well as a keyboard.
Texas Instrument's TravelMate 4000E WinDX2/40 is a color notebook with a 40 MHz 486 DX2 processor, 8 MB of RAM, 200 MB hard drive and a Microsoft BallPoint clip-on track ball.
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