{HEAD ~ a processing part} configured to provide {TAIL ~ said signal input} by said external input unit to said device and configured to provide to said external output unit, in real time, a signal having a same contents as said signal being input by said external input unit, wherein 
configured to provide
{ HEAD ~ a processing part } configured to provide { TAIL ~ said signal input } by said external input unit to said device and configured to provide to said external output unit , in real time , a signal having a same contents as said signal being input by said external input unit , wherein
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH