The NAND Gate Working Model is a practical and interactive educational tool designed to help students understand the fundamentals of digital electronics and Boolean logic. This model clearly demonstrates the working principle of a NAND logic gate using two input switches (X & Y) and a real-time LED output indicator (Z). Students can manually change input combinations (00, 01, 10, 11) using the toggle switches and instantly observe the output through the glowing LED. The printed truth table on the board allows learners to easily compare theoretical values with practical results, improving conceptual clarity and hands-on understanding. Built on a sturdy base with neatly labeled components, this project model is ideal for school science exhibitions, physics practicals, computer science demonstrations, and engineering basics learning. It operates on a 9V battery, ensuring safe, low-power performance suitable for classroom use. This STEM learning kit helps students grasp key concepts like logic gates, digital circuits, Boolean algebra, and fundamental electronics in an engaging and easy-to-understand way. Perfect for Class 10, 11, 12 students, teachers, and STEM enthusiasts.