And this is just simple. Real code is a lot of 1 and 0.

Let's say my name is hmm, Tom in code that would be,

01010100 01001111 01001101. Thats what Tom is in code.

And numbers in code like 934 is,

01001 00011 00100.

Here is the site.

Any number you can think of can be in code.

The point is that code is what tells the robot what to do.