Advice 1: How to choose screen resolution

Windows operating system allows the user to set the desired screen resolution. The correct choice of resolution helps reduce eyestrain and creates a comfortable work on the computer.
How to choose screen resolution
Instruction
1
The choice of resolution is affected by several major factors. First of all, the size of screen elements: the higher the resolution, the smaller they are and the higher the load on the eyes. The screen resolution is also influenced by the requirements of the startup programs, many of them refuse to work at too low resolution , for example 800x600 pixels. Typically the operating system during setup chooses the most optimal screen resolution, but can be set independently.
2
To select the desired screen resolution in Windows XP OS, open the control Panel: "start – control Panel", select "Screen Options". Moving the slider, set the desired resolution and press "OK". You will be asked to evaluate the new settings and save them, if they suit you. Open the window screen settings and other method – right click mouse on a blank spot on your desktop and select "Properties".
3
The most optimal for computers with a traditional aspect ratio of the screen is the size of 1024x768 pixels. It provides a normal value of the elements of the screen, this resolution is supported by almost all programs. If you have good eyesight, you can set resolution up to 1280x1024. For laptops and monitors with an aspect ratio of 16:9 screen, the most convenient is the screen resolution of 1366x768 pixels.
4
If your resolution makes the objects on the screen are too small, you can change the size of text and other elements. Open "start" – "control Panel" – "Display" – "Settings" – "Advanced" – "General". Select larger scale (dots per inch). Note that if you change the scale can be broken display of system fonts. If the result of the zoom you are not satisfied, go back to the previous version.
5
For the operating system Windows 7 screen resolution is selected in a similar way. To open the settings window, click the mouse in a blank spot of the desktop and click "screen Resolution". Then set the parameters you need and save the changes.

Advice 2 : How to calculate the diagonal of the TV

Wanting to buy a new TV, many are faced with the problem of choice. Even 20-30 years ago on the shelves of appliance stores stood 2-3 models of TV sets. Currently there are dozens of brands, hundreds of models, which differ by the set of functions, a reception mode, size, and price. However, for many the decisive factor is the choice of the diagonal of the TV.
How to calculate the diagonal of the TV
Instruction
1
Screen size (diagonal size) and the dimensions of the TV are calculated based on the size of the premises, where there will be vehicles to be purchased, the distance from the viewer to the screen and its purpose.
2
The parameters of the diagonal expressed in inches ("), and usually indicates 2 digits – diagonal visible area of the image and the full size of the CRT or liquid crystal matrix. Some companies go to the tricks and point not visible, but full size, so when buying you should check both indicators.
3
All televisions usually belong to several groups. Most often it is 14", 20", 21", 25", 32" and 36" screens. Along with the growth of the diagonal increase and the size of the TV. So if you are planning to buy a flat screen TV from 25", then immediately calculate and place under the TV, even LCD TV has a depth of 60 cm To the same? safety standards between the housing and the wall or walls of the niche should be a gap to prevent overheating of equipment.
4
According to the same safety standards, but for health, you need to calculate diagonal size and at the recommended distance from the viewer's eye to the screen. If this is the standard TV 4:3 format, the distance should be not less than 3, but better 5 the diagonals of TV.
5
Think what place will be organized by watching TV, where there will be a TV, measure the distance and divide it by 5. The resulting figure will be the maximum diagonal of the TV. For example, a chair on which to sit a spectator, separated from television cabinets to 3 meters, it turns out that the optimal diagonal will be 60 cm or 24 inches.
6
Divide the distance in 3 is only in the case if you aim to purchase LCD TV with a scan of at least 100 Hz and 4:3 format. Such TVs at a relatively close distance a flickering screen which is the main negative factor affecting health, almost imperceptibly.
7
Radiation at such distances is not harmful, it can pose a hazard only in the immediate vicinity of the screen at a distance of a few centimeters. For LCD TV format 16:9 recommended distance is at least 2.5 diagonal screen.
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