This is a relatively new type of technology. They are often called 'trackpads'.
mouse. :)
An optical mouse is a computer input device that uses a laser to sense the movement of your hand. The old style mouse used a ball with wheel sensors attached to it.
Click on the x on top right hand corner of Google chrome
Mouse
This is because the mouse icon on screen is often an arrow, and in computer jargon the user "points" at a part of the screen. Pointing is done by moving the mouse until the tip of the arrow on screen is at the desired place, such as a menu title.
While the two items may share the same basic materials, they are considerably different. A mouse is an input control device, or a "Human Interface Device." You would usually keep your hand on it to control the GUI of the computer. A monitor, however, is an output device which allows you to see what is happening on the computer. It uses Liquid Crystal and light (or a screen and light projection, if you use a CRT) to show the GUI of the computer.
The first disney cartoons about Mickey Mouse were actually drawn out by hand on paper instead of being computer-generated or acted out.
An actuating pin is a (generally safety) device that when pulled, allows the device to operate. Consider a hand grenade, or a fire extinguisher. Both have activating pins.
Point and draw Devices. A pointing device is an input interface that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer. Movements of the pointing device are echoed on the screen by movements of the pointer (or cursor) and other visual changes. A pointing device is an input interface that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer. Examples: Mouse Joystick Pointing Stick Stylus Light pen Touch Screen
This is a saddle joint which allows movement in two planes instead of one. It allows the thumb to cross the palm of the hand. This joint allows biaxial movement. This allows movement in the frontal and sagittal planes.
A trackball is an input device for controlling the cursor (mouse) the ball works the same way the ball on a mouse works except that you use your hand to turn the ball. See: http://en.wikipedia.org/wiki/Trackball
A mouse pen is a fairly new device. Instead of the conventional mouse design that often causes fatigue to the hand and wrist, the mouse pen has an ergonomic design that is similar to using a writing pen. The user is not confined to the area of a mouse pad and can control programs and applications with the movement of the mouse pen anywhere on a desk. Mouse pens are a compatible choice with computer-aided design programs used by architecture firms, graphic design and creation programs used by graphic design firms, photo editing programs used by photographers or with handwriting input software for businesses such as law firms and medical professions that will need to input an authentic signature.