entering {TAIL ~ a time constant value} corresponding to the time constant Tp into {HEAD ~ the memory} of the computing machine 
entering { TAIL ~ a time constant value } corresponding to the time constant Tp into { HEAD ~ the memory } of the computing machine
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH