Trackball to my understanding is the ball under the manual Mice which is use to move the pointer.
There are three main types of trackballs: traditional trackballs, optical trackballs, and wireless trackballs. Traditional trackballs use a mechanical design with a ball that rolls on sensors to detect movement. Optical trackballs utilize optical sensors for more precise tracking and smoother movement. Wireless trackballs offer the convenience of a cable-free experience, often using Bluetooth or RF technology to connect to devices.
It can sometimes help you to do things in the computer
According to the Amazon website, there are many trackballs with high ratings. Some brand names with the best ratings include Logitech, Microsoft, and Kensington.
Track pads , Trackballs and Pointer
Printers, scanners, external drives, mouse, trackballs, keyboards, etc.
Trackballs don't have capacity. They are not a storage medium. Did you intend to ask something else?
Pointing device (device class including trackpoints and trackballs).
The variants of computer mouse are: Track pads Trackballs and pointer Integrated Pointing Device
Trackballs are more expensive than traditional mice because they are far less popular. They are a niche market which are often use them their entire lives.
Computer mouse or a pointing device. Is that what you mean?
That depends on how rough you may be with one. I have seen Blackberry cell phones with broken cases, broken screen covers, missing trackballs and/or keys, etc.
A trackball is similar to a mouse but has a ball located on the top rather than on the bottom. Trackballs are used to move pointing devices on computers and are frequently used with CAD workstations.