#hardware
2 posts
Where a data center's power comes from
The thing a data center fears is not downtime, it is a blackout. This covers the full chain from the utility feed to the rack, the three UPS topologies, why a diesel generator must carry load within ten seconds, and how the PUE number gets gamed.
Photolithography: printing circuits onto silicon
The smallest features on a modern chip are a few nanometres across, smaller than most viruses. They are not carved but printed with light. This covers the four-step cycle, the Rayleigh criterion, the multi-patterning era, and why EUV is so hard.