Apple Extended Keyboard was created in 1987-04.
Apple Adjustable Keyboard was created in 1992.
It is the "clear" button at the upper left corner of the number pad on the extended keyboards
On the latest update with Apple TV - apple made their TV compatible with the Apple Bluetooth keyboard. To pair the devices, on Apple TV go to settings - Bluetooth - Turn the Bluetooth and The keyboard on - After searching the TV should find the keyboard (if it is in range) When it does it will ask you to type in a 4 digit code on the keyboard to pair the 2 devices. You can then use the arrow keys on the keyboard to navigate, the ESC key to go back and the keys to search for Music, Films, Youtube...
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When one is looking for an Apple Bluetooth keyboard they can go to a local Apple store or Best Buy. If you are looking for one used you can look through classifieds.
System Preferences, Keyboard, select "Show Keyboard & Character Viewer in menu bar". Go to the upper Apple menu and click on the Keyboard options and select the one you want.
Extended StayAmerica was created in 1995.
Extended Ultravox was created in 1998.
The Extended Phenotype was created in 1982.
The Extended Play was created in 2005.
Keyboard Cat was created in 1984.
The apple wireless keyboard can be connected simply by holding down the power button on the edge of the keyboard until the keyboard goes into discover mode. Then open your iPad settings Bluetooth and choose the Apple keyboard. USB keyboards cannot be connected to the iPad.