On Mon, 15 Apr 2019 15:04:16 -0000 (UTC), "Yes"
wrote:

I just saw an ad for an ASUS monitor showing 9 monitors in a 3x3 matrix
being used to show a picture. It got me curious.

Other than the monitors themselves, what hardware would be needed to do
that? For example, would something like that need 9 graphics cards,
one for each display? Instead, is that done using a specialized card?
Does it require custom software? Does it require high-end CPUs and/or
massive amounts of RAM? Or are there specially made electronic devices
produced to do that?

Thanks

Whatever it takes. Day trading is one. How financial instruments are
analyzed, or whence, withal, realtime feeds and network updates come
from, as they may involve various networking and contiguous computer
hardware support.

A single dedicated monitor is one ideally suited for specialized
software/hardware customization. I believe, unless I'm mistaken, the
largest such monitor, among specialization purposes of course, is the
size of a double-decker bus. They're an analogy often associated with
London, stacked buses, to transport twice as many people, twice as
high. I didn't note to inquire for a set purchase price.

And, I don't have handy a lower limit on a day-trader exchange
challenge. The amount of money it takes to "challenge", or walk
through the door, plunk down funds, and use in-house equipment over a
world-exchange and available global stock facilities. (Day trading,
otherwise, requires certified training for specialist licensing.)

Every second, or millisecond, apparently counts. Shall we initially
offer $500,000/US for an appropriate figure to challenge advantageous
facilities in select localities equipped appropriate means?