What is the difference between a CRT TV and a CRT Monitor? A plasma TV and an LCD monitor?

Why doesn't a refresh rate work on some CRT's of the same size (19") but does work on others?

What is the difference between Verticle Refresh Rates and Horizontal? And why are they different on TV's than on Monitors? Where can I find a standard "guide" on refresh rates for different devices?

I've read some info around the net on these things, got some links from google.com and stuff; however I am still pretty lost. If anyone can dummy it down a bit and speak POE (plain old english) or compare it to something easy to understand, I'd grately appreciate it!



Cool

There are different technics of how to display stuff on a screen. The most common being the cathode ray tube or CRT. It works by shooting of electrons to an screen with an phospor coating. When the electron beam hits the screen, the screen lights up. Actually, there are three electron beams in the tube that account for the three primary color, red, blue and green.
To generate an image, those beams scans the inside of the tv screen. The signal from the cable tells it what color a paticular part of a screen should get. That way, it covers the entire screen and generates an image.
The scanrate is the speed at which the electron beam covers the screen. For instance, 50 Hz horisontally, means the beam is passing over the screen horisontally at on rate of 50 times a second.
Besides the CRT, there are other technics of deplaying stuff on a screen. The plasma tv genarates light in much the same way as for example neon lights, like the ones you seen in Las Vegas.
LCD's make use of the fact that some crystals change color when they are exposed to an electric field.

As for the questions :

and

Got me there

I hope I awnserd some of your questions. If not, I'l hear from ye.

http://entertainment.howstuffworks.com/tv3.html
Kind of technical but a good read http://www.projectorexpert.com/Pages/between.html

Thank you both for the replies. I'm gonna check out those links now.

Schatoor, thanks for the info! It definitely helps. The one thing that didn't make sense to me was the Primary Colors: Red, Blue, Green. I thought Red, Yellow, Blue were the the Primary Colors since Yellow and Blue make green? Or are there different primary colors for different things?



Cool

Red, yellow and blue are the primary color's. But, a tv signal(ntsc) only recieves red, blue and green(plus black and white).

That seems, to me, to be a waste? How do they display yellow with that?

Thanks for the clarification.

Cool

Good question
Maybe by(this is probably completely wrong) reducing the signal for blue and increasing the signal for white?
Back to google I guess.

They never really mention yellow, but they have a chart tht explains how it's done(sort of)
http://www.hometheatermag.com/showarchives.cgi?45
edit: I was completely wrong in my above guess

Thanks for the links quietguy47. I'l definatly read 'm when I have time. I thought red, blue and green were the primary colors. Oh well, guess I was wrong.

Anytime

well there are two different things...theres the pigment primary colors, and theres the light primary colors...i dont remember what the light primary colors are but everyone always thinks of the pigment primaries when they think of primary colors

MasterC - THe best example I can think of when trying to explain the difference between a computer monitor and a TV is the following discussion I had with our project engineer back in 1995;

engineer: "why did this 19 inch monitor cost $1,800 and my new Trinitron 27 inch tv only cost $900?"
me: "the resolution on your monitor is higher"
engineer: "But i just bought one of the best TV's on the market. This 'computer monitor' thing sounds like a scam."
me: "go home tonight and sit ten inches in front of your TV for a couple of hours and tell me there's no difference."

Yeah, I definitely agree. It all just is kind of coming together with the links and replies.

Thanks everyone for your input

Cool

Monitors can display images at a higher colour resolution, refresh rate and screen resolution. A TV normally displays its image at a VERY low resolution, I think its about 640x480. There are digital TV's available that are normally flatscreens and can be used as both a normal TV and a computer monitor.

Try this link: http://www.pctechguide.com/

I wrote about monitors and flatscreens for an assignment awhile ago. I will try and find the part about displays when I have time.

The reason some monitors can display a higher refresh rate than others is to do with the speed the gun can move at and the speed the data is transferred to the monitor from the graphics card.