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An Introduction to Computer Science
(Up to Basic Computer Science)

Reader, this is Computer Science. Computer Science, this is the Reader.

Well, now that you've met, I'm sure that you will both be good friends. First, however, I think that you'll want to know something about each other.

Theoretical Computer Science has its roots in mathematics, where there was a lot of discussion of logic. It began with Pascal and Babbage in the 1800's. Pascal and Babbage eventually tried to come up with computing machines that would help in calculating arithmetic. Some of them actually worked, but they were mechanical machines built on physics, without a real theoretical background.

Another person in the 1800's was a man named George Boole, who tried to formulate a mathematical form of logic. This was eventually called Boolean Logic in his honor, and we still use it today to form the heart of all computer hardware. All those transistors and things you see on a circuit board are really just physical representations of what George Boole came up with.

Computer Science, however, hit the golden age with John von Neumann and Alan Turing in the 1900's. Von Neumann formulated the theoretical form of computers that is still used today as the heart of all computer design: the separation of the CPU, the RAM, the BUS, etc. This is all known collectively as Von Neumann architecture.

Alan Turing, however, is famous for the theoretical part of Computer Science. He invented something called the Universal Turing Machine, which told us exactly what could and could not be computed using the standard computer architecture of today. This formed the basis of Theoretical Computer Science.

Ever since Turing formulated this extraordinary concept, Computer Science has been dedicated to answering one question: "Can we compute this?" This question is known as computability, and it is one of the core disciplines in Computer Science. Another form of the question is "Can we compute this better?" This leads to more complications, because what does "better" mean?

So, Computer Science is partly about finding efficient algorithms to do what you need.

Still, there are other forms of Computer Science, answering such related questions as "Can we compute thought?" This leads to fields like Artificial Intelligence.

Computer Science is all about getting things done, to find progressive solutions to our problems, to fill gaps in our knowledge. Sure, Computer Science may have some math, but it is different from math. In the end, Computer Science is about exploring the limitations of humans, of expanding our horizons.

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