the light source and diode photosensitive element. The structure is simple and compact, so the volume can be very small. The thickness of cis products is usually less than half that of CCD products. However, because the CIS device does not have the lens imaging part, the depth of field is very small and it can only scan a plane object. CIS devices are semiconductor devices that can achieve lower costs after large-scale production. However, the CIS technology is still in development, and its opt
1. Reason
Because the character set settings of different systems may be different, the. NET Winform applications developed in one environment become incomplete or disordered in the other environment.
2. Solution
Set the AutoScaleMode attribute of Form to None (Font by default), and set the AutoSize attribute of Form to False (False by default)
Solution: set Form AutoSize to True, AutoSizeMode to GrowOnly, and AutoScaleMode to Font to automatically scale the Form and internal controls under diff
take a look at the example below:
Text 72px
Text 72pt
Text 96px
From the above font, we can see that 72px is smaller than 72pt, but 96px is exactly the same size as 72pt.
Let's adjust the computer settings: Right-click on the desktop> Properties> Settings> advanced> General> DPI setting> 96 DPI.
Try to change the settings, set it to 72 dpi, restart, and then ope
Source: http://help.adobe.com/zh_CN/flex... cf5976c17-8000.htmlIn a mobile appProgramSupports multiple screen sizes and DPI values
Resolution is the value obtained by multiplying the pixel height by the pixel width, that is, the total number of pixels supported by the device.
DPI is the number of points per square inch, that is, the pixel density on the device screen. Terms
phones, such as a 96*96 pixel control that looks smaller in the overall UI in the increasingly high-resolution phone.Appears similar to this, the overall layout effect may deform, so the PX unit is not recommended in the layout file.DP Direct AdaptationFor this scenario, Android recommends using DP as a unit of size to fit the UI.So what is DP? DP refers to a device-independent pixel, a DP-sized unit of control, in different resolutions and sizes of the phone on behalf of different real pixels,
phones, such as a 96*96 pixel control that looks smaller in the overall UI in the increasingly high-resolution phone.Appears similar to this, the overall layout effect may deform, so the PX unit is not recommended in the layout file.DP Direct AdaptationFor this scenario, Android recommends using DP as a unit of size to fit the UI.So what is DP? DP refers to a device-independent pixel, a DP-sized unit of control, in different resolutions and sizes of the phone on behalf of different real pixels,
to be remembered. Here we use only its principle, do not care about the name.
To adjust the magnification, it is controlled by the DPI in the image size. This dpi, in fact, is the PPI, pixel density. One common sense is that the design dpi on the screen is set to 72 and the print design dpi is set to 300. Why are the
.
To adjust the magnification, it is controlled by the DPI in the image size. This dpi, in fact, is the PPI, pixel density. One common sense is that the design dpi on the screen is set to 72 and the print design dpi is set to 300. Why are these two numbers?
First of all, 300, this is related to the discerning ability
not care about the name.
To adjust the magnification, it is controlled by the DPI in the image size. This dpi, in fact, is the PPI, pixel density. One common sense is that the design dpi on the screen is set to 72 and the print design dpi is set to 300. Why are these two numbers?
First of all, 300, this is related t
of approximately 96 pixel/inch resolution, and more and more applications can run at this resolution, but still face the increased resolution of the risk. Now, we can easily buy a 133-dpi display resolution of the laptop, and even 170DPI, perhaps a few years later, 200-DPI's display resolution has been everywhere, the famous industrial magazine DisplaySearch predicted at the end of 2002 there are 40% Laptops have exceeded 100-dpi's screen resolution,
to the number of pixels expressed or retrieved per unit length. Like pixels, resolution can be divided into many types.
The most common one is the image resolution. The maximum resolution of a digital camera output photo is the image resolution, in the unit of pixel per inch)
Print resolution is also a common one. As the name suggests, it is the output resolution of a printer or printing device, in DPI (DOT per inch)
Display resolution is the size of
What is resolution?
The so-called "resolution" refers to the number of pixels in the unit length or retrieved.
Resolution is the same as that of pixels. The most common one is the image resolution. The maximum resolution of a digital camera output photo is the image resolution, in the unit of pixel per inch ). Print resolution is also a common one. As the name suggests, it is the output resolution of a printer or printing device, in DPI (DOT per inch
Document directory
Point (PT, point)
Pixel (pixel, PX)
DPI, PPI
Ex, X-height
Em
Line-height and leading)
Letter spacing (letter-spacing, tracking)
Kerning)
We work with fonts every day. However, we have never been concerned about their existence. We have never used them very well, or even abused them. This is because we don't know them. Information technologies ts shouted: 95% of webpage design is typographical design is 95% typography ).
are accustomed to using "pixels" (that is, the DPI of the screen resolution we often speak) on the screen, the system can set various DPI values, so we must convert "pixels" into "twip" when we enter the numbers directly. When the DPI is set to 96 o'clock (system default), 1 pixels = (1/96) *1440=15 Twip; When DPI is
Original address: http://blog.csdn.net/chenyufei1013/article/details/8363619
Summary
This article introduces the concept of Android unit Dp,dip, and gives its exact meaning.
Overview
In Android, DP is density-independent Pixels shorthand, while dip is density independent Pixels, actually refers to a concept, are Android units. There are descriptions in the document more Resource types:
DpDensity-independent Pixels-an Abstract unit that's based on the physical
of the screen * pixel points per column; The resolution of the phone is determined at the factory and cannot be changed.
Image resolution: The number of pixels in an image per inch. Image resolution is a unit, called pixels per unit (px/in);
Screen Size: Only the physical length of the screen diagonal, immutable, in inches (in);
Screen pixel density: (PPI) refers to the number of pixels per inch on the diagonal of the screen; at normal distances, when the PPI is above 300, the human
folder search;If not found, will eventually find in the default drawable folder, if not the default Drawable folder that will be an error. (provided that a picture is made into a number of different resolutions placed in the respective density of the drawable folder)For example, if the current device DPI is 320, the system will first go to drawable-xhdpi directory lookup, if not found, will find xxhdpi→xxxhdpi→hdpi→mdpi→ldpi in turn. For non-existent
1. terms and concepts
Terms
Description
Remarks
Screen Size)
It refers to the actual physical size of the mobile phone, such as the commonly used 2.8 inch, 3.2 inch, 3.5 inch, 3.7 inch
Motorola's milestone mobile phone is 3.7 inch
Aspect Ratio (width/height ratio)
Refers to the actual physical size width/height ratio, divided into long and nolong
Milestone is and belongs to long
Resolution (resolution)
Similar to the definition of computer
Mobile-WebApp development knowledge requiredMobile device users more and more, the daily activation of Android phone has more than 1.3 million units, so we face the mobile Terminal WebApp also began to follow. This paper mainly introduces the relevant knowledge and experience of webapp development and debugging, and gives several optional solutions.First, the basic concept(1) CSS pixels and device pixelsCSS Pixels: The abstract unit used by the browser, used primarily to draw content on a Web pa
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