Mouse+(Trackball)

=Mouse (Trackball) AEdelmantoc=

Purpose
//The purpose of a trackball mouse was to create a mouse that was easy to use on a desk where there wasn't much room. The trackball mouse made it easy because you didnt have to move the mouse around the desk.//

Energy
//The energy transfer in a trackball mouse is a kinetic to electrical energy. You move the ball of the mouse which sends electrical signals to the computer. Also clicking the buttons can send an electrical signal to the computer.//

Controls
//There are numerous sensors in a trackball mouse. The ball of the mouse sits in a "cup" lined with sensors, the sensors uses the rotation of the ball to move the cursors in various directions. Also, you can click the left or right buttons that are clickable//

Materials
//Some materials that are essential to a trackball mouse are the ball, the sensors in the socket which holds the ball, and the left and right buttons that click.//

Science
//The science is that the movement of the trackball transmits information to the computer. When the trackball moves it sends information through sensors surrounding it to the cursor on the screen. The movement of the ball on an axis causes the screen to recieve information from the mouse.//

Design
//The design for anything with a trackball contains two major things, the ball itself and a little pocket full of sensors which the ball sits in. In a trackball mouse it also has two clickable buttons on the side.//

Evolution
//The trackball has been taken out of most mouses and imported to cell phones, and even in mouses as scrolling devices. Two examples are the T-Mobile Sidekick 3 and an Apple Mouse, seen at the top of the page.//

Competitors
//The main competitor of the trackball mouse is the optical mouse. They are the two main types of mouses. For a good explanation of an optical mouse look at the page Mouse (Optical)//

Partners
//The partners of a trackball mouse would be the computer monitor, computer keyboard, and the computer printers, computer printer (inkjet)and computer printer (laser). These work together because the trackball because both the keyboard and the trackball mouse transmit informtion to the monitor and the computer to execute commands. Also the mouse selects options to print//

Siblings
//A sibling of the trackball mouse is the optical mouse. They both transmit movement and clicks from the mouse to the screen//