LCD means Liquid Crystal, the technology behind these popular flat panel displays. LCD monitor differs from a traditional CRT monitor, it has a large area with a depth of several cm and weighing 30 - 50 pounds (13-23 kg) or more, while LCDs are usually 1-3 inches (2.5 - 7.5 cm ) thick and weighs less than 10 pounds (4.5 liters).
LCD screens in notebooks until the technology improves to make the leap to desktop monitors. LCD display consists of five layers: a backlight, leaf tinted glass, a "mask" in the pixels of the color, the layer of liquid crystal solution on the basis of the wired network coordinates X, Y, and the second part of polarized glass. By manipulating the exact directions through the crystal, electric charges and voltages in varying degrees, the crystals act like tiny shutters, opening or closing in response to stimuli, the level of light-colored dots on the screen lights up, creating an image.
As LCD technology developed various methods for manufacturing non-ferrous arise. O Active-matrix TFT (thin film transistor) technology, and produces color images as sharp as all CRT and generally superior to passive-matrix technology.
Important dates, when purchasing an LCD monitor on the contrast, brightness (or "nits"), viewing angle and response time.
Contrast ratio is the comparison of differences between the values of bright white and darkest black values. The higher the contrast ratio is less than flowers "money." In the standard set for the lower end models of 350:1. Many experts recommend that the contrast ratio of 500:1 and higher.
LCD monitor brighter than CRT monitors, so that consumers little reason to create a model very bright. Brightness in nits or candelas per square meter. Somewhere between 250 to 300 nits is standard. When the night is much higher, it is likely to end the brightness down.
In the viewing angle is especially important when there is a lot of people just a monitor at any given time. There is one vertical and horizontal viewing angle of the specification, which refers to the extent you have died from the picture before will be erased. On the other hand, usually in conjunction with a broader perspective. Many recommend that the angle of 140 degrees to 120 degrees horizontally and vertically. Angle, in general, the better.
Response time is measured in milliseconds (ms), and refers to the time required for full marks from white to black and vice versa. Values less response time faster and easier, especially for games and video. If the reaction is slow, the "spirit" or "trailer" can occur with fast moving images such as painting a screen overlay. The maximum response time must not be used for more than 25ms, 17ms, and more. Many players do not report phantom with a LCD monitor with a response time 16 ms or less.
LCD with one-third to half of electricity from CRT counterparts. They are much easier on the eyes, 90% less space, weight, and only a few pounds. In addition, emit much less radiation, lower frequency of CRT. This makes LCDs good choice for almost everyone, and is ideal for people who have the whole day in front of the screen. Color can change the color, how to reach the outer limits of the angles, especially the displays with narrow viewing angle and low contrast. For this reason, the most demanding graphics professionals who require a color match, regardless of the view that the use of CRT, LCD, but settled in this context.
LCD monitor is available in standard sizes from 15 inches to 21 inches or more. The screen of the same nominal size of the screen, as, unlike CRT monitors. Thus, the 15-inch LCD has a 15-inch display.
One possible weakness of LCD display with backlight. Many monitors have a 3 year warranty, but they are 1 year on the backlight. Models with 3 years warranty, the backlight is usually worth a little more, but probably resulted in additional investment.
Other computer articles : Litle Tips for hardisk
Read More..
Showing posts with label Hardware tips and trick. Show all posts
Showing posts with label Hardware tips and trick. Show all posts
Litle Trick for Hardisk
The hard disk on the magnetic disk in which to store files and programs. Unlike floppy disks or CD-ROM, which also store files and programs, the hard drive in the window to stay on your computer, and usually not enough, if what you want to change or something goes wrong.
I want to make a few useful tricks to find out whether the disk is working properly.
Physical and logical disk drive. The hard disk on a physical disk, a magnetic memory. The total area, the information can be divided into several logical drives, for more efficient use. In MS-DOS and Windows, each logical drive with a point followed by the symbol ":" Following a simple rule: with the letters A and B on the disc, and begins with the letter C: logical drives. After the logical drives, the following letters with CDs, pens and other similar devices in the system.
Free places. It is useful to know that the available free space on your hard disk if it is too small, and you decide to replace it with another, or if you want to know how much space you have. Open "My Computer" and you immediately have an idea on your hard disk. From the menu select View / Details to display the necessary parameters. It is possible, several hard drives or hard drive into logical drives, and then you'll see more of the same symbol C, which states, local disk, but each has its own letter. For each subscription, and you will see all the space (size), and remained free space (free space).
Hard disk capacity is measured in megabytes and gigabytes, that is several times bytes. A byte (ie, bait) should not be confused with the small. A bit is a binary number that only the values 0 and 1, where 8-bit binary byte, and has a value from 0 to 255 megabytes (1 MB) and 1024 MB GigaByte 1024Kb. Currently, the hard disk has several GB of secondary. In 2002, he worked for several months with a computer processor 486, 400 MB hard disk, which is ridiculous small compared to the PC with Pentium today. Thus, small hard drives, which themselves are not made today. In fact, already begun to disappear from the market of hard disk less than 10 GB!
How big should that be? If you bought your computer, not knowing much about it, they were so happy with the size of the disk in the machine for sale. But there are moments when you have more hard disks that you begin to ask for a larger one. But how big? The answer depends on what you do with your computer, as well as efficient utilization of space. If your computer only for the preparation and accounting policies, as well as the 80 GB hard drive is enough. If you want to develop programs and other scientific and technical applications, then you are probably more than 160 GB. But if you want to play on the computer, with anger, with hundreds of gigabytes each, that you have on your hard drive and much more.
Avoid hard to fill! It is strongly recommended as a hard disk is not permitted for more than 80% of capacity. We will work even if it fills more than 90% of capacity, but you notice that your computer run much slower. This is because the operating system uses disk space for temporary storage of data in the workplace. If you do not have enough space, the operating system to slow down. Do not be surprised if it freezes! It is therefore necessary to examine from time to time, the remaining free space by deleting unused files. And do not forget: the files are removed only after clearing the Recycle Bin.
Can I use the files without fear? To "clean" on the disk, you can delete certain files, but not necessarily. First, the "Empty Trash" to delete all the files: right-click the basket and select Empty Trash. And then delete the temporary files folder (C: \ TEMP, C: \ WINDOWS \ TEMP), and then you make sure that between them is not something we have in storage or could be useful. In addition, any file whose name begins with a tilde ("~") is a temporary file was not due to errors in the system, and you can delete them.
Backup. This term means "back" in order to achieve this, as often as possible, to select problems. Computers crack at times, because the operating system error, in some cases because of physical incapacity of one of the major components, and even banal, all the feathers, and there is no risk of losing data on your hard drive. If you have important data on your hard drive, make sure you regularly make backup copies. From time to time (especially when the file changes), the resumption of a copy! You can important files to DVD, and if the data volume of more, you can backup to another hard disk or on another computer.
[ Speed up windows Xp shutdown, Tips to Refresh Memory] Read More..
I want to make a few useful tricks to find out whether the disk is working properly.
Physical and logical disk drive. The hard disk on a physical disk, a magnetic memory. The total area, the information can be divided into several logical drives, for more efficient use. In MS-DOS and Windows, each logical drive with a point followed by the symbol ":" Following a simple rule: with the letters A and B on the disc, and begins with the letter C: logical drives. After the logical drives, the following letters with CDs, pens and other similar devices in the system.
Free places. It is useful to know that the available free space on your hard disk if it is too small, and you decide to replace it with another, or if you want to know how much space you have. Open "My Computer" and you immediately have an idea on your hard disk. From the menu select View / Details to display the necessary parameters. It is possible, several hard drives or hard drive into logical drives, and then you'll see more of the same symbol C, which states, local disk, but each has its own letter. For each subscription, and you will see all the space (size), and remained free space (free space).
Hard disk capacity is measured in megabytes and gigabytes, that is several times bytes. A byte (ie, bait) should not be confused with the small. A bit is a binary number that only the values 0 and 1, where 8-bit binary byte, and has a value from 0 to 255 megabytes (1 MB) and 1024 MB GigaByte 1024Kb. Currently, the hard disk has several GB of secondary. In 2002, he worked for several months with a computer processor 486, 400 MB hard disk, which is ridiculous small compared to the PC with Pentium today. Thus, small hard drives, which themselves are not made today. In fact, already begun to disappear from the market of hard disk less than 10 GB!
How big should that be? If you bought your computer, not knowing much about it, they were so happy with the size of the disk in the machine for sale. But there are moments when you have more hard disks that you begin to ask for a larger one. But how big? The answer depends on what you do with your computer, as well as efficient utilization of space. If your computer only for the preparation and accounting policies, as well as the 80 GB hard drive is enough. If you want to develop programs and other scientific and technical applications, then you are probably more than 160 GB. But if you want to play on the computer, with anger, with hundreds of gigabytes each, that you have on your hard drive and much more.
Avoid hard to fill! It is strongly recommended as a hard disk is not permitted for more than 80% of capacity. We will work even if it fills more than 90% of capacity, but you notice that your computer run much slower. This is because the operating system uses disk space for temporary storage of data in the workplace. If you do not have enough space, the operating system to slow down. Do not be surprised if it freezes! It is therefore necessary to examine from time to time, the remaining free space by deleting unused files. And do not forget: the files are removed only after clearing the Recycle Bin.
Can I use the files without fear? To "clean" on the disk, you can delete certain files, but not necessarily. First, the "Empty Trash" to delete all the files: right-click the basket and select Empty Trash. And then delete the temporary files folder (C: \ TEMP, C: \ WINDOWS \ TEMP), and then you make sure that between them is not something we have in storage or could be useful. In addition, any file whose name begins with a tilde ("~") is a temporary file was not due to errors in the system, and you can delete them.
Backup. This term means "back" in order to achieve this, as often as possible, to select problems. Computers crack at times, because the operating system error, in some cases because of physical incapacity of one of the major components, and even banal, all the feathers, and there is no risk of losing data on your hard drive. If you have important data on your hard drive, make sure you regularly make backup copies. From time to time (especially when the file changes), the resumption of a copy! You can important files to DVD, and if the data volume of more, you can backup to another hard disk or on another computer.
[ Speed up windows Xp shutdown, Tips to Refresh Memory] Read More..
Labels:
Hardware tips and trick
Subscribe to:
Posts (Atom)