; ECA Project report Air university islamabd Student Name: ID NO: SUBMITTED TO: Miss Hibba Hareem Muhammad Hamza Amin 191862 SUBMITTED BY: M.Hamza Amin(191862) Content Title Page no: Cover 1 Acknowledgement 2 Introduction 3 Objective Project Explanation Show project Conclusion Acknowledgement We can’t express enough thanks to our subject teacher Miss Hibba Hareem who teaches labs in this difficult time of time of covid-19 Thank you all for those who give us time in this difficult time to complete our project. Above all I am grateful to “THE GOD” the benevolent and merciful who gave us power and inspiration to complete the completion of this project. INTRODUCTION Most any puzzle has a long history. This one appear 1914 in a physics textbook. It baffles freshman because it cannot be broken down into series and parallel resistor configurations. They may not have heard of Kirchoff's laws: (1) the net current at any junction is zero, and (2) the potential drops add to zero around any closed loop. These are the key to solving any Complex circuit. OBJECTIVE The objective of this complex engineering activity is to carry out research, analysis, design,investigation, and implementation of a real-world complex hardware and software engineering project that has the following attributes: 1. The activity requires abstract thinking, originality in analysis to formulate suitablehardware and software models of the activity; 2. The activity involves creative use of engineering principles and research-based knowledge in novel ways; 3. The activity can extend beyond previous experiences by applying principles-based approaches. PROJECT EXPLANATION In project we use techniques to find Req by shorten the voltage source and by finding the voltage source we can easily get value of current then I use proteus to simulate that circuit and compare that circuit with theoretical onr .Basically circuit is cube shaped with 12 resistance and resistance values are given according to our roll no. Project Showing Circuit: First we convert this complex circuit to simpler one so that we can calculate it’s value easily.Then we short the voltage source and solve the circuit for equivalent resistance. Now after that we simulate the circuit on proteus We can calculate equivalent resistance by ohm’s law easily and we find that we have almost same value of equivalent resistance as we have theoretically. Conclusion: In this I successfully completed the project by communication with my friend and implement the previous data on the the project . while making this project I learned a lot about circuits and had a graet experienced to do these kind of project.We solve many circuits before but this kind of circuit I solve for the first time .It’s quit interesting to do this project.