Re:store twice, then pop?? (Score 1)

Could someone explain to me why we store twice before popping??

"store the bits, store the bits, then pop in a character on your TV."

You generally had 8 bits across each character, and then maybe 7-10 rows downward, so you needed to "store the bits, store the bits" 7-10 times before you could finally push the character on to the screen