ooh, an Opticon infrared receiver. these are installed at traffic lights. emergency vehicles have a special transmitter that causes the light to change, giving them priority.
extremely short USB cable on this keyboard
just set it on fire and go home
😬
it's a reel of tiny solder squares
they've begun moving the back part of the store. it's looking pretty empty
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just thinking about these DIP-8 packages that have been converted to surface mount by trimming the leads short and bending them outwards. this is an official IC package! it's called DIP-8 gull wing.
oh look it's a working IBM 5154 enhanced color display, and it's on the auction site.
these monitors can handle 15.7KHz for the 200 line modes as well as 21.8KHz for 350 line modes. the polarity of the vertical sync signal tells the monitor which of the two modes to be in. that's about it.
there are better monitors out there, for sure. i like the original NEC Multisync because it can handle lots of different frequencies and standards, analog and digital.
i've been thinking about the Surfside condo collapse. 🧵
i'm a bit hesitant to write about it, mostly because i keep thinking about the folks trapped in the rubble. it makes an engineering discussion seem a bit cold-hearted.
but engineering affects all of our lives -- which, on a daily basis, literally depend on engineers doing a good job. most people take this for granted. it's probably why a catastrophic failure like this can affect us so deeply.