Displays / Monitors

A monitor or a display is an electronic visual display for computers, usually comprised of the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors used a cathode ray tube (CRT) about as deep as the screen size. They are connected to the computer via VGA, DVI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors and signals.

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Sometimes a user will call me frantically, explaining that something has gone wrong and they have tried everything (read - they have messed it up more and now need someone to clean up) and it still does no good, can I help them?!  Usually the standard restart will fix most ills.  In this case a restart was unproductive.  It took me a moment to figure out this was probably something fairly simple and, most likely had happened to someone else already (which meant there was likely to be a solution online).
 

The problem:


You are working on a Windows 8.x laptop and you have an experience where your screen is suddenly all sideways,

(I  will confess, up front, that the solution to this dilemma did not come to me unbidden, or even with great effort.  I googled it and found something that looked like my problem and found a way to fix it. )

001-flipped.PNGYes sideways.  Or if you have a web browser open it may look like this one:
002-flipped.PNG

Note that if your machine is anything like my laptop or the one I fixed, it has a touchpad to control the mouse.  Everything is flipped.  So right is down and left is up, while up goes to the right and down goes to the left.  
 

The Solution:


There is an easy fix (which I found here and another Microsoft link here).  The basics in this article were good enough to get me started.  My desktop did not have the checkbox (allow the screen to auto-rotate) like the one pictured here.  This seems to only exist if you have a screen that flips as in a 2-in-1.
004-screen-res-cp.PNG
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by:Predrag
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What was not in the article is why this is happening, this functionality is not part of Windows 7, 8, 10 etc by default.
Those hot keys are part of Intel Graphic and Media Control Panel and can be disabled (it is enabled by default), or if you want you can change key sequence (not recommended).
:)Intel Hot key
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by:Thomas Zucker-Scharff
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Didn't know that.  I will investors and amend article of necessary.
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There are more than twenty applications to turn Webcam into home and  small business security. Let's discuss one of the most easy ones to install.

If you do not have already installed the drivers to the pc for your webcam, you'll need to do that first. Make sure your webcam is operational.

Then, you should get  at least four channels CCTV DVR security camera card for up to 16 different observation areas as shown following figure.A Four Port CCTV DVR Card The four channel card shall be plugged into motherboard of pc in an appropriate slot while power of pc is off .

Then install the Driver for your four channel card using the supplied installation disk to install the drivers on your pc by running the driver setup exe file. Some cards are "plug and play" but generally they will have an install disk. To achieve this process you should follow steps of setup file during installation.

Now, if drivers did not intstall correctly, the pc will not recognize the new card and webcam. This will need to be resolved first.

As the third step, our security system process requires us to get Software to establish the relationship between webCam and the card. To achieve this objective, install NetDVR  S/W to the pc. Typical view of the S/W is as follows :
Installed S/W and It's Screen ViewThen launch the S/W and make settings manually to arrange features such as motion detection, store  to hard disk, send e-mail, set burglar alarm, and calibrate sensitivity of the  web cam.

Hence, you should …
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I recently purchased an HP EliteBook 2540p notebook/laptop. It has two video ports on it – VGA and DisplayPort. HP offers an optional docking station for the 2540p that also has both a VGA port and a DisplayPort. There are numerous online reports documenting that the docking station can drive two monitors simultaneously (obviously, one via the VGA port and the other via the DisplayPort), but I could not find anyone reporting that the notebook itself (without the docking station) can drive both. So I decided to give it a try. Here are the results.

The one word answer is – YES! Running 64-bit Windows 7 Professional (this is the standard, bundled OS for the 2540p), I tested it in two different setups. The first consisted of a Dell 2707WFP 27" flat panel LCD monitor (connected via VGA) and a Dell 2709W 27" flat panel LCD monitor (connected via DisplayPort). The 2540p drove both at 1920x1200 resolution and 32-bit color (in an extended desktop configuration) with excellent performance. The only downside is that the notebook cannot drive the built-in LCD at the same time. I experimented with it for a while and found that it can handle just two displays at a time, not three. So it can drive either both of the external monitors or one of the external monitors and the notebook LCD. I happily gave up the 12.1", 1280x800 notebook display for the 27", 1920x1200 monitor.

Neither of the Dell monitors has built-in speakers, so I was unable to test whether …
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by:Joe Winograd, EE MVE 2015&2016
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Two updates to this article: (1) I tested a DisplayPort-to-DVI-D adapter and it does, indeed, work, as discussed towards the end of the article. (2) One of the articles on my to-do list is about a video adapter/converter (known as as "active" adapter) that allows three monitors (or two monitors and the built-in display) to work on some laptops in some configurations. However, I tried it on the HP EliteBook 2540p, both on the laptop itself and on the VU895UT Docking Station, and with a DisplayPort-to-HDMI active adapter in one test and a DisplayPort-to-DVI-D active adapter in another test – none of the four tests was able to get the built-in display working at the same time as the two external monitors. Regards, Joe
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A case that appears to me sometimes when repairing LCD laptop screens is typical:
It can be seen in several cases :

1 / The screen is very dark but you can see your desktop with a light, and/or you hear the windows sound.
First thing to change is the inverter board, because it's cheap, easy to change and work in 80% cases.
If you already did that and your screen is still dark you 'll have to change the whole CCFL : it's a cold cathode bulb at the botom of the lcd pannel that light up the whole lcd. dismantel is not very easy because you have do open the whole LCD pannel itself, but you can find an old ccfl for few buck on ebay. look for ccfl itself, or sometimes people are selling old broken lcd screens. you just need to check the size of the tube and the connector (only seen two types in my life).

2 / If the screen is going pink at startup, you can be sure that CCFL is dying. sometimes it lights for one or two seconds then it returns black. if you push the little switch that detects if the lid is open or closed you will see the screen lighted for one more second and then it turns black. here you are in the hurry to buy a new one.

3 / The Graphical processor is defective : you can see that easyly on a laptop by plug in an external screen :
- If you can see your desktop the GPU is good. your solution is #1 or #2 or defective wire.
- If you can't see anything don't hit the pc you can test one more thing : redirect the display to the external screen :
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by:ericpete
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greg_vander,

Congratulations! Your article has been published.

ericpete
Page Editor
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A better way to set an LCD's resolution to make the screen bigger.

For older people or those people with vision problems, a very common way to increase the screen size both with old CRT's( does anyone even still use these?) and newer LCD's is to right click the desktop to bring up the popup menu choosing the Settings tab grabbing the slider arrow to lower the resolution which makes the screen larger and easier to see.

With older CRT's this worked great! With newer LCD's this does not, umm, work so great because LCD's typically have an 'optimum' resolution which is usually printed on the foam packaging when you first buy the LCD.

What happens when you lower the screen resolution this way is that you actually change the default optimum resolution which does a few annoying things. One, the screen sharpness is not nearly as good as when using the LCD's default resolution. The second thing is some open application windows at full screen viewing will 'jump' around a little almost like they are vibrating.

So what do you do--instead of moving the slider from the default resolution--to make the screen bigger? You click the Advanced button on the same Settings tab and look closely at the General tab where you possibly ignored the text here since Windows XP first came out =) Read the text at the top of the General tab:

"If your screen resolution makes screen items too small to view comfortably, you can increase the DPI to compensate." So what you do …
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by:Rob Hutchinson
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Exactly harfang,

If you read the first part of the information regarding the article, "For older people or those people with vision problems..."

I agree with Qlemo, that his technical description describes the pitfalls; but most of the user's I've set this up for( older users with vision problems) are happy with the DPI change in the settings as most of these user's just want the text to be bigger without the maxium opened window vibration.
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by:harfang
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And we developers should acknowledge vision problems and the fundamental truth that the user's environment is the user's. That would be the topic of another article, however. I was just throwing in the GetDeviceCaps idea...

(°v°)

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Buying a new television today is nothing like it used to be. There are so many new features and terms, it's barely comparable! I hope to clarify a lot of the terms and give a little help for the buyer in this article!

Most retailers have both a "fact tag" and a salesperson at your disposal when you go TV shopping. The fact tag will give you information regarding the televisions' specifications, things like resolution, picture engine, brand, diagonal viewing area, weight, dimensions, etc. Alongside that, you have the salesperson, which may or may not know exactly what they're talking about, and may or may not be making commission.

If you went to the your closest Home Electronics store right now, you would find as many TV options as you would computer options.

Resolution: We all know what resolution is here on EE, the number of pixels on the display, well currently on retail televisions the standard for Full HD is 1080p. This means there are 1080 pixels on the vertical axis, or 1920x1080 (if it is the 16x9 standard (which is also a retail standard right now)). You will also see 720p, which is 1280x720.

Depending on your location, and the use you will have for your new television, you may want 1080p, and you may not! 1080p IS the biggest resolution out there right now, but not everything plays in 1080p. Unless you are watching bluray, downloaded HD Content (which is often only 720p, so check!), or playing games on the PS3 or xBox 360, you may not need 1080p! …
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by:xema
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I think there's a mistake on the resolution for HD "You will also see 720p, which is 1280x720. ", I have an HD TV and it's screen resolution is 1366 x 768, and most of the reviews I've done shows that an HD TV (720p) has a resolution of 1366 x 768.

Also regarding the "Refresh rate" those having refresh rates of 120 or 240 MHz are most likely to be able to handle 3D while a 60MHZ TV's aren't.

My 2 cents
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by:Dan Van Vleet
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The 720p refers to the ability to play the minimum requirement to play what is deemed HD TV by the CEA.

You are right that the actual physical pixels on an LCD are 1366x768. On a Plasma, they are generally 1024x768, due to issues making the right sized pixels.

Thanks for your input:)
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Displays / Monitors

A monitor or a display is an electronic visual display for computers, usually comprised of the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) thin panel, while older monitors used a cathode ray tube (CRT) about as deep as the screen size. They are connected to the computer via VGA, DVI, DisplayPort, Thunderbolt, LVDS or other proprietary connectors and signals.