Picture a bulletin board under the glass at the back of a classroom. One way to think of ROM is that it is similar to the hard-copy notes placed under the glass, At the end of the day,they remain unchanged.the naxt day,the notes are exactly the way they were the day before. Students are able to only read them. RAM can be though of as a blackbroard,it starts out blank. During the day, information is written on it, read from it, and even erased from it. Whan something is erased, new infomation is then writen to the same place on the board.When students go home at the end of the end of the day, the blackboard is washed clean and whatever data was on the board goes away forever. this is what happens when a computer's power is more like your long-term memory; the things you remember from your past. When you wake up in the morning