In this step B1, if the answer is N , in other words, if it is determined that the connection is not made, {TAIL ~ control} goes to step B2, and the data keyed in from keyboard 16 is handled in {HEAD ~ the normal small electronic calculator fashion} 
In this step B1 , if the answer is N , in other words , if it is determined that the connection is not made , { TAIL ~ control } goes to step B2 , and the data keyed in from keyboard 16 is handled in { HEAD ~ the normal small electronic calculator fashion }
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 TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD