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Computer Architecture Beginner to Advanced   45 Hours (Updated)

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So, let us distinguish between two kinds of terms that are used for the study of computers; the first is computer architecture, and the second is computer organization.

What you'll learn
Language of Bits
Assembly Language
ARM Assembly Language
x86 Assembly Language
Digital Logic
Computer Arithmetic
Processor Design
Memory Systems
Beginners are welcome
So, computer architecture is a view of a computer; that is presented to
software designers, which essentially means, that it is an interface or a specification that the software designers see, it is a view that they see, of this is how the computer works and this is how they should write, software for it, whereas computer organization, is the actual implementation of a computer in hardware.
Oftentimes, the terms computer architecture and computer organization, are actually confused or computer architecture is used for both. So, that is common, but we should keep in mind that there are two separate terms; one of them is computer architecture, and the other is computer organization.
So, what again is a computer? We have computers everywhere, we have a computer on the desktop over here, we have a computer in a laptop or phone, an iPad. So, we can define a computer, as a general purpose device, that can be programmed, to process information, and yield meaningful results. So, mind you this definition has several facets to it; the first is, that a computer you should be able to program it. So, circuit that does a specific action is actually not a computer.
So, for example, let us say that you have small thermometers on top of the room, which is showing what the current temperature is? That is not a computer even though you know is showing it is temperature on a nice screen. The reason is that this device cannot be programmed. Second, it needs to be able to process some information that is given from outside; like you enter some information via a keyboard or a mouse. It is processing
that information; it needs to yield meaningful results. So, all these three facets are important for defining what a computer is.
So, how does the computer work? A computer has a program which tells the computer what needs to be done; that is because, the way that we have defined a computer, is that it should be possible to instruct it to do something. So, having a program is point number one. Second there needs to be some information that the program will work on. For example, let us say you are trying to you clicked the photograph, and the photograph has some red eyes. So, we are trying to remove the red eye effect in photographs. So, in this case the photograph will be the information stored, and the program will be the piece of code; that is working on the information, photographs in this example, and then the finished good looking photographs is the result.
So, what is the program again, it is a list of instructions given to the computer. The information store is all the data image images, files, videos that a computer might process, and the computer once again is an intelligent device that can be instructed to do something, on the basis of the instructions, it processes some known information, to generate new and better and meaningful results.
So, let us take the lid off a desktop computer and see what is over there. So, if you take, if you open a desktop computer, the first thing that you see over here, is a green board, and this is called the motherboard. So, this is a circuit board for the rest of the circuit is r. The two most important circuits is that at least we are interested in at the moment, is the CPU the central processing unit, which is the main brain of the computer. This is the CPU. You would also see a small fan on top of it the job of the fan is to remove heat, and it is the other rectangle over here which is called the memory of the main memory. So, this temporarily stores the information that the CPU the processor is going to use, and the computer processor reads data from main memory processes it and writes it back.
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