Arvin Ash

How do COMPUTERS actually WORK? (2021x28)

Udgivelsesdato: Sep 19, 2021

Signup for your FREE trial to Wondrium here: http://ow.ly/9Rti30rNLcn - Highly recommended! Background videos: "What makes a Quantum computer so powerful?": https://youtu.be/RCj_BJ6BddM Chapters: 0:00 - What is a transistor? 1:40 - Review of computer components 2:58 - Intel 4004 processor 5:08 - How CPU and ALU processes information 6:56 - How logic gates work and are constructed 9:22 - How are two numbers added? 13:02 - How do quantum computers work? 16:56 - How to learn quantum computing in depth Summary: Any device that you might be watching this video on is made possible by something similar to a simple light switch. It's either on or off. Yes, or no, true or false - a transistor. The brain of your computer, called the CPU or central processing unit, is made up of billions of transistors. How does a computer work? The main component of a computer, that actually computes, is called the central processing unit, or CPU. The computational part of the CPU is called the ALU or arithmetic logic unit. ALU is composed of logic gates. Logic gates consist of groups of transistors. These logic gates do the actual computation in CPUs. In this video, we look more closely inside a CPU. We look at the first commercially available processor called the Intel 4004. It was a 4-bit processor. This means it could work with inputs formed by 4 bits. Thus, the processor could accept an input like 1011. This is also called a word. A word is an object made from 1’s and 0’s with which the CPU works. The Intel 4004 used 4-bit words, and consisted of 2250 transistors (Modern processors are 64-bit and consist of billions of transistors). Instruction tell the ALU how to process the inputs. How does an ALU work? If we want to add two numbers, 2 and 3, first these numbers will be represented by 4 binary bits. In binary code, 2 is 0010 and 3 is 0011. These are the input bits, also called operands. To add them together, the instruction code must tell the ALU to add