On the way home the other day I got to thinking about those huge LCDs that are so ubiquitous on roadsides today. So I did some searching and found this video.
Nice to get a refresher on something I have probably long forgotten. But what he kind of glosses over is the addressing issue. I realize it uses multiplexing but I would think the address bus of those controllers would still need to be fairly enormous. Does anyone know the typical address bus size of these controllers?
also how do the really large screens work? Do they have multiple CPUs each responsible for their own section?
I find this kind of tech fascinating that someone figured out how to apply it. The CRT seems pretty simple to see how development occurred Someone probably fired an electron beam at a plate. To prove electrons were striking the plate, they coated the plate with phosphor, they then exposed the beam to a magnetic field and the CRT was born.
But LCD. Something so tiny. You have to wonder about thought process that went into the original experimentation.
Nice to get a refresher on something I have probably long forgotten. But what he kind of glosses over is the addressing issue. I realize it uses multiplexing but I would think the address bus of those controllers would still need to be fairly enormous. Does anyone know the typical address bus size of these controllers?
also how do the really large screens work? Do they have multiple CPUs each responsible for their own section?
I find this kind of tech fascinating that someone figured out how to apply it. The CRT seems pretty simple to see how development occurred Someone probably fired an electron beam at a plate. To prove electrons were striking the plate, they coated the plate with phosphor, they then exposed the beam to a magnetic field and the CRT was born.
But LCD. Something so tiny. You have to wonder about thought process that went into the original experimentation.