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Paint By Numbers
"From the CRT to LCD, how does a computer monitor give us our colour pictures? Let's see if you know."
15 Points Per Correct Answer - No time limit
"Paint by Numbers"? What do computers have to do with that? My computer has little lights on its screen and they go on and off when I want them to.
Fine, then. Do you know what each of those little dots of light are called?
So my computer screen is made up of pixels. Whoopdedo? My pretty pictures and advanced video games are just little dots of light randomly changing colours.
Well, no. Not exactly. In one pixel, how many different colours of light are there?
I'm starting to understand. My monitor doesn't draw objects; it dabs small dots. But before it does that it uses its internal electronic little art pallette to find the correct mix of red, green and blue.
There you are! You're on your way! But a computer being what it is, everything has to be in code. On most computers, what is the hexadecimal code for red?
Well, that was somewhat confusing. Don't do anymore weird questions like that anymore, OK?
I'll try, but no promises. However, something new has come up. On a monitor screen, how do you tell the difference between black and white?
White leaves all lights off; black turns them all on.
Black leaves all lights off; white turns them all on.
There are separate lights in each pixel for tinting.
Your mind decides what each pixel *should* say.
Great. My computer's monitor is made up of a bunch of flashing red, green and blue lights. Why would I care?
Because it's cool. Or I think it's cool. If you agree, here's a fun FITB question. If you disagree, I punish you with this fun FITB question.
Given the context of this quiz, what does CRT stand for?
((Three Words, 7 3 4))
My monitor doesn't have all those tubes, though! My monitor says that it is an LCD screen!
Very well. What does LCD stand for, then?
((3 words, 6 7 7))
So far, my computer chooses the colour and turns it into a code. Then my monitor (CRT or LCD) uses that code to create that colour on the screen?
Ummm...you might have missed an important step there, though. The information must somehow get from the computer to the monitor via some sort of cable, like a DVI cable. But I'll be nice and make this multiple choice...what does DVI stand for?
Diopic Visual Inlet
Digital Visual Interface
Digital Video Interface
Diopic Video Inlet
So my computer sends the picture to the screen through the cable, then. When I watch videos, the computer is obviously sending the information quickly and often, then, right?
Yes, exactly. That's called the refresh rate. Which one of these frequencies is the least likely to match your monitor's refresh rate?
70 times per second
3600 times per minute
The first home computer with a monitor was the IBM PC released in 1981.
Whoa, I'm having a bit of a brain overload. This is a little too much data for me to process. I'm even talking like a computer.
Hey! That's a great way to end the quiz! What would be better than an obscure fact? Monitors use electricity and light, two very complex energy forms. What is it called when, using the tiny amounts of radiation left by the monitor as it writes, you 'eavesdrop' on a computer? (Hint: Don't be scared!)
Van Eck Phreaking
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Compiled Jun 28 12