Take a look inside your computer to see how transistors work together in a microprocessor to add numbers using logic gates.
Get the book CODE that inspired the video http://amzn.to/pR9MwK
This is a great book by Charles Petzold that really breaks down a computer conceptually so that non-technical readers can understand how it works.

EDIT: At 00:12, the chip that is circled is not actually the CPU on this motherboard. This is an older motherboard where the CPU was first inserted into a small board and that board was then inserted into a slot on the motherboard. The chip that is circled is called the /”northbridge/” and helps the CPU communicate with memory. The northbridge also uses transistors and logic gates just like the CPU.

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