Computer+Keyboard

=My Device= Bhecktoc


 * My Device: Computer Keyboard**

Purpose
What is the fundamental purpose of the device? The Purpose of this device is to be connected to a computer and is used to write and send information to the computer. Examples are documents, internet, and etc. It is used mostly write letters and numbers on the computer for almost all aspects of the computer.

Energy
The energy aspect in a computer keyboard is used with electrical energy. It sends small amounts of current to flow to the computer when you press a button. (More of this will be explained in the Science section.

Controls
The controls on the keyboard are very simple. The buttons are used to press down to type a word on a computer. This will be further explained in the science section. Keyboards have buttons on them set up in a very particular order. it goes from the top with the numbers on them from 1 to 9. Then there are the letter buttons and other options on the sides of them. The letter buttons are separated into 3 rows. It goes from qwertyuiop and the middle row is asdfghjkl and the bottom row on top of the space bar goes as follows, zxcvbnm. Usually is a keyboard does not have this order in letters, it's not technically called a keyboard.

Materials
Usually the outside material of a keyboard is plastic but the inside part of the keyboard is what really matters. The inside is made up of 4 elements. Rubber dome, Membrane, metal contact, and a foam element. These 4 elements can make 4 different keyboards. Rubber dome switches are a small, flexible rubber domes with a carbon center. The most important part of this is the carbon center because it is what completes the circuit. Next is the membrane, they stretch from one end to the other. It is usually inexpensive, and doesn't make a clicking sound when you're typing. Metal contact and foam element, are very uncommon and makes a click sound.

Science
Keyboards are made with a circuitry called key matrix. When you press a key on the board it is pressing a switch. This sends a signal to the computer depending on what key you press. This causes a vibration which is called a bounce when you hit the key. Finally when this happens it goes through the computer depending on the bounce causing the letter, word, or number on the screen.

Evolution
New and improved keyboards have different buttons and symbols on them like to control brightness, volume, etc. of your computer. New one's also may have a touchpad on them and buttons you can program to have different pictures. Before this time though, there were typewriters that would use ink to type onto a piece of paper. Typewriters are an early evolution of the keyboard. They now have keyboards that are wireless also. These keyboards are now in the price range of an outstanding 100 to $200 now.

Competitors
Wireless keyboard, Typewriter, On Screen Keyboards, and Touch Keyboards.

Partners
The items that work with this device are mice, speakers, printers, memory cards, monitors, etc. These are all used to be connected to a computer to use the computer. Most are also usually connected with USB like most keyboards are now.

Siblings
Light switches, arcade games, game controllers,

http://computer.howstuffworks.com/keyboard2.htm http://computer.howstuffworks.com/keyboard5.htm Mouse (Trackball)]] [[Mouse (Optical) Playstation Controller]] Hard Disk Drive
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