I’m just used to it working but I don’t understand at all how it works. Like how do the electric signals coming from the computer lead to each individual pixel showing the rexactly right color at the exactly right time?
In: Technology
The magic is called “multiplexing”. You have one wire with a series of signals arriving one after the other. The multiplexer is then like a junction with one input wire and many output wires. A control signal switches wich output is on to route the input in that direction.
In the case of a screen it simply has to sequencially send signals to each pixel one after the other. The pixels themselves are pretty much little LEDs with a small driver that takes the digital input signal and converts it to an analog power to make the pixel light up that much. Each pixel is made from 3 subpixels responsible for Red/green/blue so you can mix every colour from that.
Together these two systems turn a stream of digital signal that only switches between on/off quickly but encoding different numbers into a full picture on a screen.
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