I was a teenager visiting Computer Age on the weekends at the same time. It was a time when computer access was still scarce and you hung around shops and went to conventions just to get access to one. Some friends used to go to the tandy store each afternoon after school and type in a lunar lander game they had written on the tandy 100 for sale. Each day the shop would turn of all the machines and wipe the game so they would go back up the next day and type it in again.