Input (grade 13): Although the Atari 5200's internal design was extensively based on that of the 400\/800 home computers, the differences were sufficient that games designed for one would not run directly on the other.
Output (grade 12): Although the Atari 5200's insides were very much like that of the 400\/800 home computers, the differences were enough so that games designed for one would not run directly on the other.