http://coopermaa2nd.blogspot.tw/2011/11/arduino-uno-keyboard.html Arduino Uno Keyboard
http://coopermaa2nd.blogspot.tw/2011/11/usbkeyboard-library.html USBKeyboard Library
https://github.com/coopermaa/USBKeyboard
http://yehnan.blogspot.tw/2013/08/arduino-unousb.html 讓 Arduino Uno 變 USB 鍵盤
https://github.com/trusktr/arduino-keyboard-sketch/blob/master/arduino-keyboard-sketch.ino arduino-keyboard-sketch.ino