Taking Things Apart

It's not always easy taking something apart. I was taking an old COMPUTER KEYBOARD apart. It has its own CIRCUITS and you can see it has its own little MOTHERBOARD. I almost couldn't get the keyboard apart because of one screw that would not come out. I broke a little part off from the covering on top of the screw as I pulled the covering off sweating. It gave me a sinus headache from all of the tension. I could see the back of the covering and the back of the little keys that move up and down after taking it apart. Now I have some idea of why the keys might stick sometimes. There was a plastic covering inside of the keyboard. Believe me, it was not easy putting the keyboard back together with flushed keys. The screw that would not come out kept the keys around it from flushing so they were not quite right.