Bits/Bytes/Compiler & Interpreter

A compiler is a program converts the code into binary, and an interpreter is another program that translates from one code to another. A bit is an aspect to binary code, they are the 1's and 0's. A byte is composed of eight bits. If I want to type the letter "A", it very quickly converts the letter into binary.

1 = On

0 = Off

Computer Architecture: My Perspective

I have no idea what computer architecture is. However, I imagine it to be creating different parts and putting them together to make a product. In computer science class, I think we learn how to utilize computer architecture. 

How does the computer understand what I type?

It understands what I type because in its software it is programmed to recognize i.