The ball inside older mice - was made of a solid steel ball coated in a thick layer of rubber.
The laser or ball on the bottom.
To our research we find that the first computer mouse was made out of Wood.
Well the mouse sends the movements of it to the computer. A mouse with a mouse-ball has rollers inside of it that move with the ball and from there can operate similar to a keyboard. An optical or 'laser' mouse is much more advanced.
A Ball Bearing
If the ball is on the bottom, it's a "roller ball." If it's on the top and meant to be touched, it's a "trackball."
it is a ball or sometime a laser thingy
The balls are made of hard rubber.
The device with a rolling ball on the top is called a computer mouse. It is used to move the pointer on a computer screen by rolling the ball and is an essential tool for navigating and interacting with the computer.
wood
It was made in 1964 by Doug Engelbart.
They both do the same job. And on an older mouse it's easy to see the similarities. An older computer mouse would have a ball underneath. Then as you moved the mouse around the ball would roll and the computer would count the rotations. A track ball was basically a mouse turned upside down. Instead of moving the mouse to rotate the ball, you'd move the ball directly with your fingers instead.
The ball inside older mice - was either solid rubber - or a steel ball with a rubber coating.