Blog about Web Programming and Electronics
The Vadnica Blog is a place where I share my experience with web programming and electronics. Here you will find articles about HTML, CSS, JavaScript, PHP and MySQL, as well as Arduino projects, Linux and news from the world of technology. I write in a simple, understandable language, so the content is accessible to both beginners and more experienced readers.
What is a Hash Function and Why It Matters
Hash functions are one of the most important tools in modern computer science. At first glance they ...
How Docker Works: Everything You Need to Know About Containers
Docker is a tool that revolutionized the way developers build, package, and run applications. Instea...
How GitHub Works: From Repository to Collaboration
GitHub is a web platform that provides hosting for Git repositories and adds collaboration tools tha...
What is Git and why every programmer should know it
Git is a version control system that enables tracking changes in codebases. Every developer, regardl...
How UART Serial Communication Works and How to Use It with Arduino
Whenever you open the Serial Monitor in the Arduino IDE to inspect sensor data or flash new firmware...
How the SPI Communication Protocol Works and Why It Delivers High Speeds
When connecting peripherals that demand substantial data throughput—such as color TFT displays, SD c...
How the I2C Communication Protocol Works and Why It Is Ideal for Arduino
When connecting multiple sensors, displays, and peripheral modules to a microcontroller (such as Ard...
What is PHP and Why It Powers WordPress and Most of the Web
Despite the emergence of alternative backend stacks, PHP (Hypertext Preprocessor) continues to power...
What is JavaScript and Why It Powers the Entire Modern Web
When interacting with any modern web platform, data feeds refresh dynamically without page reloads, ...
CSS Basics for Beginners: How to Style Webpages
If HTML provides the structural skeleton of a webpage, CSS (Cascading Style Sheets) is the engine th...
What is HTML and Why It is the Backbone of Every Website
Every website you navigate on your computer or mobile device is fundamentally built upon HTML (Hyper...
How to Install Apache or Nginx Web Server on Linux (Ubuntu / Debian)
A web server is the foundational software layer that receives incoming browser requests over HTTP an...