Tablet

=My Device= M. Sweeneytoc

=Purpose= //The purpose of a pen tablet is to be able to draw on the computer and control the movement of the cursor across the screen.//

Energy
//The kinetic energy of moving the stylus across the pad is transformed into electrical energy, the cursor moving across the screen.//

Controls
//The way that you work a tablet is very similar to using a pad of paper and a pen. You hover over the 'pad' with the stylus to get to different parts of the screen, and when you touch the stylus to the pad, it's like you're drawing!//

Materials
//In order for a tablet to work, you would need the stylus, the pad, and a computer with a working USB drive so that it can connect to the computer.//

Science
//The way that a tablet works is through electromagnetic induction. There are wires that run through the tablet horizontally and vertically, and these wires transmit and receive information that is given to it through an LC circuit in the pen. Through the electromagnetic signals, the tablet is able to 'know' where the pen is above the pad without having it touch the surface.//

Design
//Usually a tablet will look like a flat board, called the pad, and the user will use a special pen or pencil-shaped tool called a 'stylus'.//



Evolution
//Graphic tablets, when they first started out, were known as either a spark tablet or an acoustic tablet. The stylus that it used made a 'click' noise, and the pad would know the position of the stylus through the sound. The first graphic tablets were just like ones that could recognize handwriting, and this was called the Stylator. Just like today's tablet, it uses an electromagnetic grid to tell the position of the cursor.//

Competitors
//Tablet PC Smart Board Nintendo DS Interactive White Boards//

Partners
//USB Drive//

Siblings
//Nintendo DS Interactive White Boards Tablet PC//