https://www.google.co.kr/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#newwindow=1&q=how+to+make+pulse+oximeter http://blog.silabs.com/2012/11/21/create-…
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https://www.google.co.kr/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#newwindow=1&q=how+to+make+pulse+oximeter http://blog.silabs.com/2012/11/21/create-…
