http://www.answers.com/topic/square-wave?cat=technology
again, the DC vs AC mentality as though they are the only wave forms.
arthur
On Sat, 15 Sep 2007 14:14:45 -0700, I. Care
wrote:
Let's get really nit-picky. A state change from 0vDC to 12vDC is a
level shift. AC is "Electric current that reverses direction
periodically, usually many times per second." In this case there is no
reverse of direction, it goes from a steady 0vDC to steady 12vDC until
you remove the signal so there is no periodicity.