Computers (ELI5), Bash and Vim: from 0b0000 to 0b0001

Name: Computers (ELI5), Bash and Vim: from 0b0000 to 0b0001
Rating: 4.7 (94 reviews)

Just a little intro to Computer Science. This is a must-know knowledge before learning a language, such as C.

Created byJalal Bounaim

Last updated 1/2024

English

English [Auto],

What you'll learn

You will learn about COMPUTERS, VIM, BASH.
COMPUTER ARCHITECTURE=We are going to see how a computer is made super shortly in an ELI5 way.
COMMAND_LINE=This will be the place you will spend most of your time as a developer, being proficient in it is a must!
VIM=Vim is the place where you'll write the actual code. Indeed is a text editor (with steroids) made by developers for developers.

Course content

4 sections • 16 lectures • 1h 58m total length

What is a computer?3:03
A computer combines input devices, ram memory, and a cpu brain to execute commands; the cpu’s alu performs arithmetic and logic, while outputs appear on screens.
Bytes?4:31

Symbols vs Values12:07
Explore how symbols encode values in binary and other bases, revealing the detachment between symbol and value. See how base two and hexadecimal notation relate to memory and encoding.
Code demo with symbols4:23
Explore how the number 42 is written in memory using binary, decimal, hexadecimal, and octal notations, then see that four bytes store the same value as a binary configuration.
Why are Hexadecimals handy?4:49
Binary numbers get very long quickly making it hard for people to deal with. Converting the binary to decimal is a bit of a pain but converting to hex is easy. Each 4 bits of a binary number converts to one hex digit. This makes the numbers easy to convert and easy for people to remember.
Overflow6:08
Explore how overflow occurs in memory using an eight-bit char, and see binary addition wrap from 255 to zero when space runs out.
How about negative numbers? The 2's complement trick8:51
Explore how a one-byte overflow yields zero, then learn two's complement encoding of negative numbers by flipping bits and adding one, enabling subtraction via addition in the ALU.
Code demo to actually see an Overflow and 2's complement negatives8:41
Demonstrate how overflow and underflow occur in unsigned chars and how two's complement enables subtraction, addition, and broader arithmetic using memory and binary patterns.

The 4 pillars to become a developer3:43
Master the four pillars of a developer: the terminal and shell with bash, vim as a text editor, a programming language like C or Python, and git for version control.
What is the terminal (aka command line)?4:55
Explain what the terminal and command line are, compare Unix-like macOS and Linux, and demonstrate using item with bash or fish, changing shell, and basics like ssh to remote servers.
Anatomy of a command with examples3:27
The file system. Your computer is just a bunch of nested directories2:20
Understand how the file system organizes a computer as a root directory with bin, dev, and users, illustrating gui, terminal, and desktop access.
Simple sample workflow with the terminal18:27
Explore the command line essentials with the manual, mastering ls, echo, cat, cp, diff, mv, and rm, using wildcards and cd, and preview the path toward vim.
PATH8:08
Learn to navigate the file system using pwd, cd, ls, and cat, and distinguish absolute versus relative paths from home to desktop.

Requirements

This course is gonna bring you from from 0 to 1 in the real of software development. It is for absolute beginners, everything is explained in an ELI5 (explain like I'm five) manner. I will teach you everything I learnt in a compressed way, giving you a path to follow.

Description

This course provides the perfect foundation for budding programmers, offering a concise yet comprehensive exploration of fundamental principles that are indispensable in the world of computer science.

The journey begins with a super_small dive into computer architecture, just to "see" a RAM, CPU and ALU.

Navigating through the command line is a skill every programmer should master. We have a look into Bash, discovering its efficiency in managing files, executing commands, and streamlining your workflow. This is explained super easily.

Then Vim, a versatile and powerful text editor. Master the art of text manipulation, coding with speed and precision.

One section of the course explains the "coding" idea, namely, how we can encode everything into some binary digits.

Although the course is succinct, it acts as a gateway to a wealth of additional resources. Numerous links guide you to further exploration, providing an expansive roadmap for your continued learning journey. I wanted to keep this course under 2 hours cap. This may have been a limit, but maybe not. Indeed, let me repeat, this course is just a mega "pointer (a C concept)" to other online sources. You can treat this just as a roadmap indeed! So mind the link resources!

Who this course is for:

You are curious about the "software development" thing, and you want a concise course showing you what is about.

Computers (ELI5), Bash and Vim: from 0b0000 to 0b0001

What you'll learn

Explore related topics

Course content

What is a computer ELI52 lectures • 8min

The hidden language of computers6 lectures • 45min

The purpose of computer science is to avoid using the mouse6 lectures • 41min

Cool but...where Do I write my code?2 lectures • 25min

Requirements

Description

Who this course is for: