I/O range and memory range

[rookie1010]

Hi
I wanted to know what I/O range and memory range means. I was trying to figure out the IP of my machine, and i came across these two terms.

 

[m3z]

Here are the links to what you are asking

http://www.webopedia.com/TERM/I/I_O.html
http://www.webopedia.com/TERM/m/memory.html

 

[rookie1010]

but what do you mean by it's range
I/O range
memory range?