To (almost) quote the great Bob Dylan...
"the answer my friend is blowing in the datasheet"
Have a good read. 
...and...I even gave you a link to an explanation of multiplexing...read THAT as well.
Now I don't mind answering questions for someone who makes the effort and has the abilities required for the task, but actually THINKING for someone, then answering the questions, then answering the same questions again is really starting to make me lose the will to live........