I'm a huge fan of both computer science and secret messages. If that's your cup of tea, I challenge you to decipher this puzzle and test your general knowledge of computing.

1. There are 30 iconic computing numbers hidden within this string, each referring to a specific concept in computing. You have 40 guesses to identify them all.
2. There is no overlap, and every digit is used. Ignore the line wrapping.
3. No two numbers are the same kind of number.
4. This is not a memory test; you should be able to identify every number with little ambiguity without external tools.
5. Every number is 3-6 digits long, truncating if necessary.
6. The first number is the year 1970. By rule three, there are no other years. Good luck!