A trackball mouse is a pointing device that utilizes two rollers to detect movement in a vertical plane. These small balls are swept around on the surface of the device, employing tilting to translate the direction of rotation into cursor motion.

How does the trackball mouse work?

The ball that you see inside the bowl is held in place by a series of metal gears. Moving your thumb around the bowl moves the ball, and moving the trackball translates that motion into cursor movement. Pressing down on one side of the trackball moves its geared mechanism, which causes a signal to be sent from the mouse to your computer, telling it to move the cursor up or down based on how far you press down.

The trackball mouse also allows you to control the speed of the mouse cursor and can zoom in and out. In addition, some models include a scroll wheel that will enable you to navigate through websites or documents quickly. The ball is small in diameter and usually made from hard plastic, while the bowl is made from soft rubber to provide comfort and enhance grip. At first glance, it looks as simple as a computer mouse, but it’s very different in terms of how it functions.

Trackball mouse parts

1. Cable

2. Trackball housing

3. Trackball [the ball in the middle]

4. Scoop [Area where you put your thumb]

5. Thumb button [Button that your thumb can press]

6.FlexiGlass or Roller Wheel [To control your screen cursor]


Speed: As with a mouse, a user can scroll through documents or websites more quickly using the trackball than with a mouse. Because the user does not need to move their fingers into position for every click, they can position their whole hand just over the ball. Moving the hand in one motion provides accuracy.

Precision: Because the user’s hand remains stationary above the ball, it increases the accuracy. The user can click on any part of the screen without moving their arm around. A trackball also allows for easier access to hot corners, areas of the screen that reveal quick menus. These menus cannot be accessed when a mouse is used, and they are more difficult to access with a touchpad due to their small size and location.

Multitasking: It is straightforward to perform two different actions on a computer. Instead of dragging the mouse to the corner, one can just switch hands and continue working. The trackball allows for these rapid switches in action without having to move one’s arm out of the way or perform an awkward two-handed operation.


Convenience: Most trackballs are pretty large compared to their non-ergonomic counterparts. If portability is an issue, this is one drawback that must be considered. Another is that the device must be used on a surface to function, unlike a mouse or trackpad.

Hardware: There are also differences in the hardware that often accompany trackballs. The ball itself may be made of plastic or metal, and it must be mounted in bearings so that it can freely rotate. It is not as easy to replace a trackball to plug in and use a new mouse. Trackballs also require software drivers so they can function properly.

Software: A mouse’s advantage over trackballs is that it is not required to use a driver to make the device work. Trackballs may also require drivers to work on any computer, whereas a plugged mouse will function on almost any machine. 

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It is highly recommended that everyone must purchase and use a trackball mouse. As with technological advancement, trackballs have become even more convenient and efficient than in earlier days. It is more comfortable to use and has a smooth-moving action that easily picks up the cursor without bothering you to change anything. This makes it very easy for people of all ages to operate it without any difficulty whatsoever.