*** file   : simplis_046_shiftregisterleft_source_u3_points.txt
*** example: simplis_046_shiftregisterleft_example.sxsch
***
*** Time	D3	D2	D1	D0
0	0	0	0	0
50n	0	0	0	1
150n	0	0	1	1
350n	0	1	0	0
1150n	0	1	1	1
