Oh man, that takes me back. I used to love looking into my father's spare electronics cabinet when I was a kid, full of chips and resistors and capacitors. I v

Oh man, that takes me back. I used to love looking into my father's spare electronics cabinet when I was a kid, full of chips and resistors and capacitors. I vividly remember the LED drawer, with a hundred red, green, yellow LEDs he used in almost all of his projects, and just one or two of those opaque, white LEDs which I knew shone blue light, and I've never seen him use, as if they were a rare and prized possession. I get it now, as the blue LED technology is so much more recent than any other LED technology. They must have been much more expensive than the other ones.