i never used MSDOS and i actually only started learning how to use a computer beyond AOL when Windows XP came out. i was the one in my family that had to know how to fix all the problems now i'm the one in the family who knows the most about Macs and was responsible for my parents' switching although i owe my own switching experience to a friend.
when i did the poll, i had 12.5, 37.5, 25, 25, and 12.5 which is 112.5!