How does the cpu/gpu tell each individual lcd in a monitor to do? And how does it understand without 2.1M+ wires?

Question

How does the cpu/gpu tell each individual lcd in a monitor to do? And how does it understand without 2.1M+ wires?

In: 3

Answer 1

The computer prepares a signal that contains the intensity values for each pixel in the first row in a sequence, followed by the second row, and so on until it has scanned across all pixels and returns to the top again to draw the next frame. The time spent on each pixel is agrred upon by the standard and resolution that the computer and the monitor have agreed upon in advance. This happens in all commonly used analog and digital connections.