What are the differences between a mouse and a trackball?
The most common input device is the mouse. Mouse: The cursor on your screen moves as you move your mouse across a surface. The common complaint of a mouse is the amount of repetitive arm and shoulder movement required and the hand discomfort while holding the mouse. The line of ‘Contour’ mice is sized to fit a wide range of hands for both left and right hands. To determine the best size, turn your palm face up with fingers extended. Measure from the tip of your middle finger to the first crease in your wrist: • Large: 7 1/2″ – 8 1/4″ • Medium: 6 3/4″ – 7 1/2″ • Small: 6″ – 6 3/4″ Note: if you are on the cusp, size up. Trackballs: A trackball is in essence an upside-down mouse with a larger roller ball. The design allows the user to keep the arm relatively stationary, as the fingers move the ball and cursor across the screen. There are several designs depending on hand position and personal preference.
