An IC socket mounted on a test board while in use and having a semiconductor device with projection electrodes mounted on {HEAD ~ said IC socket} for {TAIL ~ testing}, comprising: 
for
An IC socket mounted on a test board while in use and having a semiconductor device with projection electrodes mounted on { HEAD ~ said IC socket } for { TAIL ~ testing } , comprising :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH