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Tech Tutorials | App Reviews & Android Fixes | Fintech Shield Blog
Welcome to the Fintech Shield Blog | Your go-to hub for insightful Tech Tutorials, Unbiased App Reviews, Android Solutions, and Digital innovation tips. Whether you're a curious user or a seasoned tech pro, we’ve got something valuable for you.
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What is a Passive Infrared Sensor? Working, Uses & Benefits Explained
Passive Infrared (PIR) sensors are widely used motion detectors that sense infrared radiation from objects in their surroundings. In this blog, we break down how PIR sensors work, where they're used—from home security to smart lighting, and the key benefits they offer in terms of energy efficiency and automation. Whether you're a tech enthusiast or just curious about smart devices, this guide will help you understand the role of PIR sensors in modern electronics.
Kalyan Bhattacharjee
Jul 292 min read


How to Format SD Card on Android (2025) | Safe & Easy Guide
Formatting an SD card on your Android phone is a simple yet essential task to maintain optimal performance, free up space, or prepare it for a fresh start. Whether you’re troubleshooting issues or switching devices, this guide walks you through every step of safely formatting your SD card directly from Android settings no external tools required.
Kalyan Bhattacharjee
Jul 263 min read


32-bit vs 64-bit Architecture: What's the Difference & Which One to Choose?
Confused between 32-bit and 64-bit architecture? Learn the key differences, performance impact, RAM limits, software compatibility, and why 64-bit is the future of computing.
Kalyan Bhattacharjee
Jul 214 min read


Mediatek Dimensity 9300 vs Snapdragon 8 Gen 2: Which Chip Is Better?
MediaTek and Snapdragon go head-to-head again. Explore which chip—Dimensity 9300 or Snapdragon 8 Gen 2—offers better speed, AI, gaming, and efficiency.
Kalyan Bhattacharjee
Jun 303 min read


India’s Semiconductor Push: Domestic Chip Production Set for 2025
India is gearing up to enter the global semiconductor arena with plans to begin domestic chip manufacturing by the end of 2025. Backed by massive government investments and global partnerships, this initiative aims to reduce reliance on imports and boost India’s self-sufficiency in critical tech infrastructure. Here’s a closer look at how this move could reshape the future of Indian electronics & innovation.
Kalyan Bhattacharjee
Jun 283 min read


Shakti Processor: India’s Homegrown Open-Source CPU Revolution
The Shakti Processor is India’s revolutionary open-source CPU project built on RISC-V architecture. Designed by IIT Madras, it offers secure, scalable, and cost-effective alternatives for embedded systems, desktops, and servers — all proudly Made in India.
Kalyan Bhattacharjee
Jun 193 min read


How Do I Check What Graphics Card I Have? Windows, Linux & Mac
Learn how to check your graphics card on Windows, Linux, and Mac using built-in tools and commands. Quick and easy steps!
Kalyan Bhattacharjee
Apr 33 min read


CPU vs GPU Explained: Which One Does What?
Curious about the difference between CPUs and GPUs? Learn how they work, their strengths, and which one is best for your needs!
Kalyan Bhattacharjee
Mar 133 min read


How to Replace the CMOS Battery & Why It Matters
Learn how to replace your CMOS battery and why it's essential for maintaining system time, BIOS settings, and overall PC stability.
Kalyan Bhattacharjee
Mar 94 min read


What is a Model Number? Everything You Need to Know
A model number is a unique identifier assigned to a specific product version, helping manufacturers, retailers, and consumers distinguish between different models and variations. Whether you're shopping for electronics, appliances, or gadgets, understanding model numbers can make a big difference in finding the right fit. In this blog, we explain what a model number is, why it matters, and how to decode it for smarter buying decisions.
Kalyan Bhattacharjee
Nov 3, 20245 min read


Computer POST and Beep Codes: A Complete Guide
Understanding Beep Codes Troubleshooting with POST and Beep Codes | Every PC User Should Know Introduction When you power on your...
Kalyan Bhattacharjee
Jun 22, 20244 min read


Lenovo Laptops | Your Gateway to Innovation and Performance
Lenovo Laptops Best Lenovo Laptops: A Comprehensive Review and Buying Guide Introduction Lenovo has long been synonymous with innovation,...
Kalyan Bhattacharjee
May 8, 20244 min read


Intrinsic and Extrinsic Semiconductors | Foundation of Modern Electronics
Explore the core differences between intrinsic and extrinsic semiconductors—how pure and doped materials power everything from smartphones to solar panels in modern electronics.
Kalyan Bhattacharjee
Mar 25, 20243 min read


PCB's | Unveiling It's Importance, and Technology; PCB Full Form
Printed Circuit Boards (PCBs) are the unsung heroes of modern electronics, acting as the foundation for nearly every digital device we use today. From smartphones to spacecraft, PCBs provide the critical pathways that allow components to communicate efficiently. In this blog, we dive into the full form, structure, importance, and evolving technology behind PCBs, revealing why they're central to the future of tech innovation.
Kalyan Bhattacharjee
Sep 25, 20233 min read


Microchip Technology: How Microchips Work & Why They Matter
From powering smartphones to driving modern AI systems, microchips form the invisible backbone of today’s digital world. This blog takes you on a deep dive into microchip technology—how they work, where they're used, and why they matter more than ever in 2025.
Kalyan Bhattacharjee
Aug 26, 20234 min read


Memory Cards: A Deep Dive into the Technology Inside It
Memory cards are compact yet powerful storage devices that have revolutionized how we store and transfer data. In this blog, we delve into the internal technology of memory cards—exploring their types, how they function, and the science behind their performance. Whether you're a tech enthusiast or simply curious about what's inside that tiny chip, this deep dive will give you a clear understanding of the engineering marvel behind modern digital storage.
Kalyan Bhattacharjee
Aug 21, 20233 min read


NVIDIA: Revolutionizing Industries Through Graphics and AI
NVIDIA stands at the forefront of technological innovation, blending cutting-edge graphics with powerful AI capabilities to transform industries ranging from gaming and film to healthcare and autonomous driving. This blog explores how NVIDIA’s GPUs and AI frameworks are reshaping workflows, accelerating research, and enabling the future of smart, visual computing.
Kalyan Bhattacharjee
Jul 8, 20233 min read


Graphics Cards: Unleashing Visual Power for Immersive Computing
Graphics Card Graphics Cards and the Future of Visual Computing Introduction In the realm of computer hardware , graphics cards play a...
Kalyan Bhattacharjee
Jun 21, 20233 min read


AMD Processors | Redefining Performance, Rise of a Challenger
From underdog to industry leader, AMD’s journey is a story of innovation and resilience. This blog dives into how AMD processors — powered by the groundbreaking Zen architecture — have redefined performance, challenged Intel’s dominance, and revolutionized everything from gaming to enterprise computing.
Kalyan Bhattacharjee
Jun 20, 20233 min read


Intel's Processor Legacy: Exploring the History of Processors
From powering the first personal computers to leading the charge in cutting-edge AI and high-performance computing, Intel’s processor legacy is a story of innovation, competition, and relentless advancement. This blog takes you through the fascinating journey of Intel’s CPU evolution—highlighting the milestones, breakthroughs, and impact that shaped the modern digital world. Dive into the history of processors and discover how Intel became a cornerstone of computing excellenc
Kalyan Bhattacharjee
Jun 19, 20233 min read
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