IPod+Screen

=IPod Mini Screen ppatel5= = =

[[image:Apple-IPhone-Headphone-Jack-Plug.jpg width="267" height="203" align="left"]]
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Purpose
//What is the fundamental purpose of the device?// To display the list of songs, the battery power, time, games, and current song playing.

Energy
//What energy transformations are seen in its operation?// Uses electrical energy. The screen is attached to the battery and other parts of the Ipod by a thin square plastic with extremely thin wire coming out if it. When you comand it to do somthing the electricity goes through the plastic pice and shows you the thing you wanted to see.

Controls
//What sensors/controls are designed into the device?// The image shows up with a Liquid Crystal without that you wouldn't see any images on the IPod. There are a series of electrical codes passes through a decoder by extremely small wires in small segments in the Liquid Crystal. When the codes passes by in a pattern, the Liquid Crystal darkens in that shape where the wires are and then the image shows up on the screen displaying the image you want to see.

Materials What material(s) are essential to the device?
There are are many layers in the Ipod display screen but the Liquid Crystal is one of the most important part of the screen. The liquid crystal is not fully solid or liquid, it has characteristics of both of them. There are many forms and types of liquid crystals such as thermotropic liquid crystals they can change in temperature and rarely change pressure. They are usually rod shaped; they are long and thin. They light or brighten when ever electricity pass through it and that is what we see. The other essential piece on the ipod is the headphone jack. It is more essential then the liquid crystal for the screen cuz if the screen breaks you can stil listen to music on the ipod, but if the headphone jack is broken you can't listen to the music at all. So that is why you should always take care of the headphone jack the most when you get any type of ipod. But also be sure to take care of everything else on it to.

Science
//What is scientific principle is central to its operation?// The scientific principle to the Ipod screen is electricity to light and motion. When electricity runs through the liquid crystal inside of the screen it light up and changes it's direction of the molecules. The electricity move through so fast we see the image moving and that cause motion.

Design
//What does a typical device look like?// The screen looks like a normal screen. The screen is square few inches wide and long and it is a few centimeters thick. There is a black plastic that border the screen, that is for the screen to stick on the body of the Ipod.

Evolution
//What changes have there been (or could there be) in this device?// It became bigger, thinner, displays Image in color, and works faster.

Competitors
//What other devices serve a similar purpose?// New IPod's with big and color screens that play videos//.// Thinner and wider screens on the new IPod's and MP3 Players//.//

Partners
//What other devices work in conjunction with this device?// The computer monitor

Siblings
//What other devices use the same scientific principle?// T.V. Screens, computers/laptops, digital clock, and all other screens. http://uminfotech.wikispaces.com/Ipod+Touch [] http://electronics.howstuffworks.com/lcd2.htm