Tactile Switch觸摸開關

Tactile Switch觸摸開關
http://www.ladyada.net/learn/arduino/lesson5.html
http://www.google.com/search?ie=UTF-8&oe=UTF-8&sourceid=navclient&gfns=1&q=tactile+switch

http://www.cpu.com.tw/kh/sw/tach/tach.html