Author: Raj Kumar

Timers : Timers are one of the most fundamental concepts in embedded systems, electronics, and programming. Whether you are blinking an LED, setting a countdown, or building a real-time system, timers play a crucial role. In this blog post, we will dive deep into the world of timers, keeping it simple and easy to understand…

Python try-except Made Easy: Handling Errors Like a Pro (2026)

Apr 27, 2025

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in Python

Python try-except : When you are writing Python programs, sometimes things go wrong. Maybe you tried to open a file that doesn’t exist, or divided a number by zero. Without handling these mistakes, your program will crash!That’s where try-except comes in — your superhero cape for handling errors gracefully. What is try-except? try-except is a…

Master Positional Parameters in Shell Scripting : Mastering $1, $2, $#, $@ (2026)

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in c, OS

What Are Positional Parameters in Shell Scripting? Positional Parameters : Bash or shell scripting, positional parameters allow you to access arguments passed to a script or function. They are incredibly useful when you want to handle user inputs dynamically. Why Learn Positional Parameters? Key Positional Parameters Explained Parameter Meaning $1, $2, … First, second, etc.,…

Master CPP Design Patterns Tutorial for Beginners 2026

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in c, Embedded

What Are Ccpp Design Patterns? CPP Design Patterns : Design patterns are proven solutions to common software design problems. They help developers write reusable, maintainable, and scalable code. Think of them as blueprints that guide how to structure your code in a way that solves recurring challenges. Why Learn Design Patterns in C++? C++ is…

O – Open/Closed Principle (OCP) | Master CPP Design Patterns 2026

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The Open/Closed Principle (OCP) is a golden rule of clean software design that says: “Software entities should be open for extension but closed for modification.” This means once your class or module is working correctly, you shouldn’t need to change its core logic when requirements evolve—you should extend it instead. In this tutorial, we’ll explore…

L – Liskov Substitution Principle (LSP) | Master CPP Design Patterns 2026

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Liskov Substitution Principle (LSP) The Liskov Substitution Principle is one of the SOLID principles of object-oriented programming. It was introduced by Barbara Liskov in 1987 and it states: “Objects of a superclass should be replaceable with objects of its subclasses without affecting the correctness of the program.” What It Really Means: Imagine you’re working with…

Single Responsibility Principle (SRP) | Master CPP Design Patterns 2026

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When writing clean and maintainable code, the Single Responsibility Principle (SRP) is one of the most important design principles to follow. It is the first principle in the SOLID design principles, which are a set of five rules that help developers write better object-oriented code. In this article, you’ll learn: What is the Single Responsibility…

D – Dependency Inversion Principle (DIP) | Master CPP Design Patterns 2026

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Definition (Simple Terms) Dependency Inversion Principle : “High-level modules should not depend on low-level modules. Both should depend on abstractions. Abstractions should not depend on details. Details should depend on abstractions.” Let’s Break It Down This sounds complex, right? Let’s simplify. Imagine you’re building a robot. The brain of the robot is the high-level module…

Master Function in Shell Scripting(2026)

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