【實用教育app】BluetoothBitBang|最夯免費app-綠色工廠好玩App

This app, together with an easy-to-build piece of electronic hardware, will let you write and read digital signals from your phone. You can use it to debug or study digital electronic circuits. Please see http://en.wikipedia.org/wiki/User:WillWare/BluetoothBitBang for more information.