Motor Drive:  turn on Switch 2 to have full step mode  ( speed up the motor movement)
Distance&Step: 80 step/stop = 1 mm (at full step mode,clock frequency is 250Hz)
               160 step/stop = 1 mm (at half step mode, clock frequency is 100Hz)
	       The highest clock frequency created by LabVIew I/O is 100Hz at half step mode;
               The highest clock frequency created by LabVIEW I/O is 250Hz at full step mode.
Time/meter: 14mins at half step mode and 100Hz; 7mins at full step mode and 100Hz, 
	    2min 41secs at full step mode and 250Hz.