How Do Computers Work from Scratch No Prior Knowledge Needed

If you’ve ever wondered why computers behave the way they do, not just how to use them, but how they actually work under the hood, then this is the video for you.. . We start with understanding what people say when claiming that “computers speak in 0’s and 1’s”. We’ll then learn how computers understand numbers, how we can build circuits to add numbers, and eventually scaling this up to building an entire processor from scratch, leaving no questions unanswered. To end the video, we’ll take a look at the CPU of the original iPhone, and write some code in that processor’s “language” that we can run on a real processor! This is the video that I wish had existed when I first set out to learn how computers actually work. No prior knowledge necessary.. . . Website I mention in the video which has more examples: https://github.com/milen-patel/cpu_tutorial. . ROM Information from 07:53:27: https://docs.google.com/spreadsheets/d/108MHR5kCd2tl38dsFmMpXsPD-Xn_rS9F6DZ_Ka0XoSM/edit?usp=sharing. . Chapters:. 00:00:00 – Introduction. 00:06:24 – How Humans Represent Numbers (Decimal). 00:18:24 – How Computers Represent Numbers (Introduction to Binary). 00:31:38 – Converting from Decimal to Binary (Human-mode to Computer-mode). 00:46:16 – How does addition work in binary?. 00:56:45 – Representing Negative Numbers in Binary. 01:09:09 – How to Negate a Number in Binary. 01:11:35 – How does subtraction work in binary?. 01:16:45 – Introduction to Logic Gates. 01:32:19 – Constructing a circuit out of logic gates. 01:37:31 – Building a selector with logic gates. 01:53:10 – Using logic gates for simple addition of binary numbers (Half-Adder). 02:03:41 – Where the half adder falls short. 02:07:14 – Constructing a full adder for correct addition of binary numbers. 02:25:36 – Chaining Adders together for multi-bit addition. 02:43:46 – Building a full 8-bit addition circuit (ALU). 02:56:05 – Enabling subtraction in our circuit. 03:19:57 – Introduction to Sequential Logic. 03:27:34 – Storing Data with Logic Gates (Latches). 03:52:52 – Introducing the Flip-Flip, a better Latch. 04:09:48 – Bridging back to the ALU. 04:11:59 – Saving the output of our ALU. 04:20:20 – Manipulating the ALU to build a circuit that counts numbers. 04:26:19 – Random Access Memory (RAM). 04:55:26 – Building RAM from Logic Gates. 05:18:50 – Connecting RAM and the ALU. 05:20:56 – Introducing the BUS. 05:40:25 – Adding a display to our computer (7 Segment Display). 05:57:12 – Read Only Memory (ROM). 06:07:52 – Making our display stateful. 06:28:55 – What happens when we start chaining operations?. 06:32:30 – What are Instructions?. 06:34:46 – The Instruction Register. 06:39:12 – Building the first Instruction for our CPU. 06:55:31 – Synchronizing the computer, introduction of the Clock. 07:05:00 – Program Counter. 07:13:03 – Clock Timing of Our First Instruction. 07:19:37 – Designing the Instruction Set Architecture (ISA). 07:29:09 – Branching in Code. 07:34:37 – Adding a Flags Register to the ALU. 07:48:10 – Introducing Control, the “Brains” of our computer. 07:53:27 – Implementing Control as ROM. 08:14:15 – In Detail Timing of Each CPU Instruction . 09:01:40 – How Condition Instructions are Implemented. 09:15:15 – Writing our First Computer Program!. 09:29:11 – Executing our First Program. 09:44:29 – Counting Fibonacci Sequence on our Computer. 10:13:12 – Physically constructing our conceptual computer. 10:21:10 – Naming and History of Computer (SAP). 10:27:20 – The original iPhone processor. 10:43:12 – ARMv6 Overview. 10:57:31 – Hexadecimal Mini-Course. 11:04:06 – How does our CPU draw to a screen? (Introduction to MMIO). 11:14:00 – Looking at a real micro-controller. 11:17:44 – Programming our computer to turn on a light. 11:47:49 – Running our code on the computer. 11:49:55 – Where I would continue if we had more time. 11:53:26 – Conclusion