What is a Touchpad?
A touchpad is a device designed to translate user input in the form of motions aimed at moving a cursor to a computer. It works much like a mouse, allowing users to move a cursor to select items and perform other functions, but is designed in a different way. Instead of using sensors and a roller ball or laser like a mouse, a touchpad is a soft pad with sensors that respond to finger movements on the pad. Since a touchpad does not require desk space, it can commonly be found embedded into lap tops, personal digital assistants, and portable media players. For users who prefer the touchpad interface, touchpads are available for desktop computers as well. Under the soft skin of the touchpad, there is an array of sensors which create an electrical field. The finger changes the character of the electrical field, allowing the user to drag a cursor across the screen. Most touchpads come equipped with mouse buttons allowing the user to click on objects, while others interpret taps on the touch
A touchpad is a computing interface device that typically mimics the functions of a computer mouse. Instead of having an external peripheral device such as a mouse, the touchpad enables the user to interact with the device through the use of a single or multiple fingers being dragged across relative positions on a sensitive pad.
A touchpad is an input device commonly used in laptop computers. They are used to move the cursor, using motions of the user’s finger. They are a substitute for a computer mouse. Touchpad’s vary in size but are rarely made larger than 20 square centimeters (about 3 square inches). They can also be found in PDA’s. Touchpad’s operate by sensing the capacitance of a finger, or the capacitance between sensors.
