Very important to me, any criticism will be gladly accepted and appreciated :-)
Although you may not yet know what you want to major in, which department or program at MIT appeals to you and why? (*) (100 words or fewer)
Studying the basics of electromagnetism and electronics in high school, and an increasing fondness for programming made me realize where my interests lay. Semiconductors, transistors, IC's: the intricacy of these devices, and the way they have become indispensable to mankind, in a childish way, excites me. The Electrical engineering and computer science department at MIT, with labs such as LEES and RLE, and amazing UROP facilities, under the guidance of the world's best researchers, would enable me to research in electronics and communication systems design and improve the efficiency of electronic systems. Albeit challenging, it will hone me into an engineer with the ability to create technology and change lives, which is what I aspire to be.
I like how your essay begins very strongly and specifically. Towards the end, the flow falls off so you should reread it a few times to improve it. Overall, great idea and your specificity proves that you are sure about what you are saying. Throwing in the "Which is what I aspire to be" makes the essay seem like it was ended in the middle of an idea. maybe you can put the aspiration earlier into your essay and then write more about that.