Is there any logic behind ASCII codes' ordering?

Question

I was teaching C to my younger brother studying engineering. I was explaining him how different data-types are actually stored in the memory. I explained him the logistics b

Answer 1

This chart shows it quite well from wikipedia: Notice the two columns of control 2 of upper 2 of lower, and then gaps filled in with misc.

Also bear in mind that ASCII was developed based on what had passed before. For more detail on the history of ASCII, see this superb article by Tom Jennings, which also includes the meaning and usage of some of the stranger control characters.