The most used part on a keyboard is the top row of letters! Thats because it contains all of the vowels except for 'a'. Speaking of the top row of letters on a key board, did you know back in the day when they used typewriters, they wanted to make it easier to spell 'typewriter' so they put all the letters in that word on the top row of a keyboard! Try spelling it in the comments section! Also tell us if you learned something new today!