![]() That's a quick overview of how CPUs work :) Also if you wanna learn more I suggest you a book called Elements Of Computing Systems, made by Noam Nisan and Shimon Shocken. Which are just a bunch of electrical pulses commanding components. RAM is a memory that can be used to save stuff and then spit just 1 one out at a time. Then this results get stored into registers or RAM (depends on whatcha wanna do) Registers are used commonly for inputing a specific component like the ALU or for outputing. The ALU is what does all the actual processing, ALU englobes EVERY SINGLE boolean function you can possibly think of. You might also have a CU but I dont find it usefull unless you're using CISC instruction set. You first have an Aritmethic Logic Unit or ALU, some memory (registers and RAM), other type of program memory (ROM) and I/O stuff. This happened to be the first I clicked on, but it looks good enough:Īctually it depends a LOT on architecture. Here is one that seems to explain it well enough. ![]() Just to see what's out there I entered "half adder" and "binary adder" into Google. Ask more specific questions if you want to know more after doing some reading. The search term "lookahead carry" should yeild more than you want to know about this. There are various schemes to make this happen faster at the expense of more gates. Once you have looked up binary adder, you will see that information ripples from the low bit to the next bit to the next bit, etc. In practise, many adders are more complicated than a bunch of half adders chained together. I think with the search terms "half adder" and "binary adder" you will easily find more than you ever wanted to know about them out there. Half adders and how they are chained together to make whole multi-bit adders is well covered out there, so I won't try to explain the details here. These are chained together to add any number of bits and to deal with the carries from the addition of lower order bits. The basic building block is a hardware logic circuit called a half adder. How binary numbers are added is no secret. Clock speeds are measured in gigahertz (GHz), with a higher number equating to higher clock speed. This helps your computer complete more tasks by getting them done faster. Yes modern processor use binary to represent numbers internally, and that is because it's easier to have and detect a voltage that is either high or low than various levels in between. A computer’s processor clock speed determines how quickly the central processing unit (CPU) can retrieve and interpret instructions. You asked a simple question but the answer to "How does a CPU work?" can fill books.
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