I still remember when I was in my first year studying electrical engineering at the university, I was working on building a simple circuit from the little knowledge that I had at that time, using the basic components such as resistors, switches, batteries, and lamps. Along the process of my circuit building, I thought to myself, wouldn't it be nice if there were a component that lets current pass in one direction and blocks it from the other? At that time, I thought I was being a smart kid who just posed a very clever question that could change engineering forever. And at that very moment, my naiveté was instantly shattered when I found out about the existence of diodes. It exists . The 'magical' component that I wanted in order to realize the outcome for my circuit actually existed, not to mention it being invented more than a century before I came into being. I was completely awestruck, and I was filled with excitement at the same time. I kept asking, how does this '...
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