Square wave symmetric around zero volts

[Splatapus]

Hi everyone

For a pre-lab, I am asked to draw a square wave symmetric around zero volts.
I am not sure what this graph looks like, can someone give me an example?

Thank You

 

[gnurf]

sym·me·try
noun \ˈsi-mə-trē\
1: balanced proportions; also : beauty of form arising from balanced proportions
2: the property of being symmetrical; especially : correspondence in size, shape, and relative position of parts on opposite sides of a dividing line or median plane or about a center or axis — compare bilateral symmetry, radial

 

[FailedLaunch]

I am asked to draw a square wave symmetric around zero volts.
I am not sure what this graph looks like, can someone give me an example?

Something like this?

 

[Splatapus]

Something like this?
[PLAIN]http://cnx.org/content/m28264/latest/hv3.jpg[/QUOTE]

Ok Thank You! I was unsure because it said "symmetric about 0 volts" and i was wondering if the voltage would have to be the same on either side of the y-axis.

Thanks!

 

[gnurf]

I was unsure because it said "symmetric about 0 volts" and i was wondering if the voltage would have to be the same on either side of the y-axis.

And what have you concluded?

EDIT: I'm sorry, I misread your last post. Disregard my question.