Track-Ball for Trackball Mouse
Like a mouse a trackball is a pointing device that has a ball in it is held in a socket which has sensors in it. It detects the rotation of ball around x-axis and y-axis. A trackball mouse is an upside version of a normal mouse. To move the cursor on the screen user rolls the ball with his thumb, figure or with the palm. Like a mouse there is no limit on a trackball’s effective travel; sometimes, a mouse reaches to the edge of its working area while the user of the device wants it to move a bit further on the screen. Where as in a trackball the operator can keep on rolling the ball continuously up till when he has reached his desired location.
There are currently three major companies Logitech, A4Tech and Kensington which are producing trackballs. Logitech’s optical devices have notably low friction and are superior in quality; whereas A4Tech has not released a new model of its trackball in long time. Now day’s large trackballs are used in computerized special purpose workstations like air-traffic control room or production houses. Trackballs are most commonly used in those places where the movement of cursor is needed to be highly precise. Trackballs are mainly used in those places where durability and fast emergency use is required like in military institutions.
Trackballs are most commonly used in households in computer aided video games. Atari was the one who first named the device as “track-ball” as the device became popular in 1980’s. In recent years the use of trackballs has increased in gaming devices and professional gamers. Track balls are no longer the part of game consoles, or computer devices; in modern world they also exist in our BlackBerry, T-Mobile Sidekick 3 and in most HTC Smartphone’s. These miniature trackballs are made to fit in the mobile devices and are controlled by the tip of a figure and has made our lives very easy.