The PCBs of today are essentially the same as the ones today. A sandwich of copper and some sort of insulating material. Sure we have better materials and techniques but it seems that PCBs are something like resistors, capacitors, and the like—they are just something we use to build practical devices because they are needed.
There's been some discussion about "how it used to be done". When I ran across this, three things struck me:
1. It seemed very old.
2. It is from 1969 which is in my lifetime and so it seems like it couldn't be as old as it is.
3. The revolutionary changes in tools and techniques for PCBs happened very fast.
Yes, I was a kid at the time, but it really doesn't see like it could be 50 years ago. In any case, if you want to see how it used to be done, here's Tektronix and how they did it. And they were definitely among the very best. Just a little CNC but a lot of half sleeve shirts and pencils.
There's been some discussion about "how it used to be done". When I ran across this, three things struck me:
1. It seemed very old.
2. It is from 1969 which is in my lifetime and so it seems like it couldn't be as old as it is.
3. The revolutionary changes in tools and techniques for PCBs happened very fast.
Yes, I was a kid at the time, but it really doesn't see like it could be 50 years ago. In any case, if you want to see how it used to be done, here's Tektronix and how they did it. And they were definitely among the very best. Just a little CNC but a lot of half sleeve shirts and pencils.