Without boring the life out of everyone, gold is used in computer chips, but only to connect it to the outside world. I was involved in the design and manufacture of chips.
A large computer chip can have in excess of 10 billion transistors, and there are lots of other "components" also. All this on a piece of silicon about the size of a postage stamp.
It starts as a large circle of pure silicon, about a foot in diameter, and the main transistors are photographically created (moat: base of the transistor, Gate: the "working part" PLDD and NLDD (positive and negative lightly doped drains: The talking parts) and a lot more. All this is silicon, nitrides, boron, arsenic, phosphorus, gallium, etc. ) They are put down in layers, a photo pattern is put on top, and what is not needed is etched away. The sizes are in nanometers, about 75,000 nanometers in a human hair.
After that, contacts made of metal are put on, kind of like battery terminals, again, billions of them per chip. After that, the "wiring" to link it all together. A layer of an insulator is applied, then trenches are cut into the insulator, then copper is plated on, then a polisher polishes off copper that is higher than the trench. These copper layers are about 1/100th the thickness of a human hair, so that shows how "flat" the polisher needs to be. Another layer of insulator is applied, billions of holes are chemically "drilled" in the correct spots to reach the "wiring" underneath, and another layer of copper is applied. A less complicated chip may have 5 metal layers, and a complex one might have 15 or more layers.
Finally, a layer of aluminum "wiring" is joined to the copper "wiring" to allow it to communicate to the outside world. The foot diameter circle is sliced into the little squares or rectangles that become 1 chip. The backside is ground away, leaving it a little thicker than a sheet of paper. Billions of components, wiring, etc. weighs a couple grams.
It is actually placed in it's holder, what you see if you open up a computer, upside down. The heat is generated by the transistors, which are at the bottom of the chip, now in the package as the top of the chip. The silicon was ground away so the "hot" transistors would be a close to the surface as possible, and a metal heat sink is placed on top of them, and the actual packaged device may have aluminum cooling fins on top, and maybe a fan blowing air across.
Meanwhile, the electrical signals, once they leave the chip, travel on gold wires to reduce resistance. Part of the design of the chip is to put the components that talk the most to each other as close as possible, because a difference of a few millimeters, traveling at the speed of light, can make a big difference how fast the chip works.
All these billions of parts, wiring, gold leads, etc. for a couple hundred dollars.
The last 4 factories I helped bring on line all cost over 1/2 billion dollars each. The "cameras" were about the size of a 2 car garage, with lens elements about the size of a 55 gallon drum. They were made by such companies as Nikon and Canon.
You may now return to your normal life.
ed ay +3112
1968 GT500 Arrest Me Red (The Big Boy Toy)
1966 K Code Vert (The K 'Vert)