What is the size of the building intercom extension 4 3 inch screen

This depends on which brand, the size of the products they produce is different, there are various models, and they are almost resistant to mobile phones. Take Fuqing Li Taichang Zhengye building intercom products as an example, there are inches, 7 inches, inches, and then each size and model function is also different.

The door machine has a potato round inch, and the number of Chang collapsed indoor fast and inched machine.

Phone screen size such as inches, inches, inches, 5 inches, etc.

Both refer to the length of the diagonal, which is not the same thing as the size of the mobile phone screen (length, width, area).

To know the length and width of the screen, you also have to know the aspect ratio of the screen.

If the aspect ratio of the screen is k, and the width is x, the length is kx; The diagonal is known to be c.

By the Pythagorean theorem there is x +(kx) =c.

It can be solved x=c (1+k).

Finally, you have to change the unit of c from inches to centimeters or millimeters, 1 inch = centimeter = millimeter.

If you are too lazy to calculate, you can check the size of the phone.

Generally speaking, the size of the mobile phone screen such as inches, inches, inches, 5 inches, etc., all refer to the length of the diagonal, and the size of the mobile phone screen (length, width, area) is not the same thing.

To know the length and width of the screen, you also have to know the aspect ratio of the screen.

If the aspect ratio of the screen is k, and the width is x, the length is kx; The diagonal is known to be c, and the Pythagorean theorem has x +(kx) =c

It can be solved x=c (1+k).

Finally, you have to change the unit of c from inches to centimeters or millimeters, 1 inch = centimeter = millimeter If you are too lazy to calculate, you can check the mobile phone size comparison table, as shown in the following figure:

The inch is just the length of the diagonal, and the length and width are not necessarily, they change with the width of the screen.

At present, there are basically two kinds of screen resolutions for domestic products:

For example, Taipower's C430T is an inch screen, using an IPS screen, and its screen resolution is 800 480).

Generally speaking, the resolution of the inch screen is slightly larger, but there is no regulation or boundary on how big the market will only introduce the general usually, or directly a certain model, in the end, what the real result is, and the specific model has to be treated specifically, there is no one rod on the screen size of the two resolutions, the small screen may be high-end products, the resolution of high-end products is high, and the resolution of the low-end of the large screen may be low.

There is no correlation between screen size and resolution.

At present, mainstream mobile phones have inch screens, and the resolution is basically 800*480, 854*480.

Of course, in terms of current technology, there is no problem with achieving a resolution of 1280*720 and 1280*800. It mainly depends on the design, demand, and cost.

Widescreen, 800*480 square screen, 640*480 resolution is the precision of the screen image, which refers to the display or depends on the production process of the screen, rather than just looking at the size of the screen. Screen size: ,

Inch refers to the diagonal size of the screen is equivalent to centimeters, the specific length and width are uncertain, and different mobile phones have different aspect ratios.

The diagonal length of the inch screen is.

In the case of the same screen size, the screen area size is in order: 1:1 square screen, traditional 4:3 screen, 3:2 screen, 16:9 screen.

It depends on what screen it is, and the size of some areas is different, ><