Cell+Phone

=My Device= BlackBerry Curve 8300 Emills13

**Purpose**
It is used to make and receive calls. But now a days it can be used for
 * Messaging
 * Electronic note pad/ reminder
 * calender
 * Digital Camera
 * Calculator
 * MP3 Player
 * Internet

**Energy**
//What energy transformations are seen in its operation?//

**Controls**

 * a compact speaker
 * a microphone
 * a keyboard,
 * a display sc reen,
 * IC Chips (for storing phone numbers, ringtones, and voicemail's.)
 * powerful circuit board
 * <span style="font-family: Arial,Helvetica,sans-serif;">microprocessors that make each phone a miniature computer.

**Materials**
IC Chip:

[[image:800px-Siliconchip_by_shapeshifter.png width="290" height="205"]]
http://en.wikipedia.org/wiki/File:Siliconchip_by_shapeshifter.png =**Science**=
 * Copper Oxide
 * Germanium
 * Silicon
 * Silicon Monocrystals
 * Aluminum
 * Polysilicon
 * For LEDs, Lasers, Solar Cells:
 * Gallium Arsenide
 * Composed of many overlapping layers:
 * Defined by Photolithography
 * Also in different colors
 * A Transistor is formed from the main layer (Polysilicon or metal) when it crosses a diffusion layer
 * Rare:
 * On-Chip Resistors made of meandering stripes
 * Inductive Structures which can be built as coils

**Design**

 * This is one of the types of designs a cellphone can look like.**

Evolution

 * Cell phones are just one of the many objects everyday people need to have in there pockets. When cell phones first came out they were only able to make and receive calls. a little later in there time life they were made so that they fit in your pocket. Now there are so many different things we can do with a cell phone ( texting, messaging, Internet, mp3. ect) and it is more like a mini computer in your hand. Later in life a cell phone will have many new changes to make more complex and more advanced**


 * Related Devices**

**Competitors**

 * **Land phones but they aren't able to work a Certain amount of feet away from there unit base.**
 * **all cell phones are competitors with each other. there trying to be the most popular, better design ect.**
 * flip phones**
 * **blackberry flip**
 * **Razer**
 * Touch screen**
 * **lg dare**
 * **lg view**
 * **blackberry storm**
 * IPhone
 * **Samsung instinct**
 * Slider phones**
 * **walkman**
 * **rumor**
 * **rant**
 * **gravity**
 * **Lg Shine**
 * **Pantech**

**Partners**

 * MP3 Player
 * **internet**
 * **messaging**
 * Bluetooth Headset