I had this questions come into my head becasue I was watching a video of someone zooming into a microchip and they pass a human hair and continue zooming in an incredible amount. I’ve heard that some of the components in microchips are the size of DNA strands which is mind boggling. I also watched a video of the world’s smoothest object in which they stated that normal objects are no where near as smooth because if you blew them up in size the imperfections would be the size of Mount Everest. Like if you blew a baseball blew up to the size of earth it would have huge valleys and mountains. It wouldn’t be perfectly smooth across. So my question is how are these chip components the size of DNA not affected by these imperfections. Wouldn’t transistors not lay flat on the metal chip? How are they able to make the chips so smooth? No way it’s a machine press that flattens the metal out that smooth right? Or am I talking about two different points and we haven’t gotten that small yet?
In: Engineering
In addition to the other answers memory structures are built with redundant rows that can be switched in during product testing so if a fault is found it can effectively be patched.
Error correction is used so that temporary errors caused by cosmic radiation and the like are corrected automatically and this can also correct permanently failed individual memory cells.
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