In English scanner.
Let's talk only of the typical desktop scanner to scan all know photography documents, etc, since there are other types of scanners such as barcode (which are those using eg. in supermarkets for reading product codes on the boxes and know the price) and other ...
function this device is the scan images, ie to translate his physical form to digital form that can be understood by the computer, and then it can store, edit, print, etc.
THE most important component of the scanner and performing the work of interpretation is the lens CCD (Charge Coupled Device = charged coupled device (loading refers to electric charge)) expressing the variation color light into electrical signals so that the pc can understand, a factor taken into account together with the speed , depending upon the type of port it is connected to the computer and therefore what makes the speed data transfer. Today the most common is that they are USB 2.0, so we get a relatively quick and inexpensive scanner, some time before we find USB extension parallel port scanner (very slow) and much faster SCSI port, especially the latest models with SCSI-2 pulled even today compared to a still very fast USB.
quality value image we can provide a flame scanner color depth, also called scanner resolution is measured in bits. A bit take 2 values, which can represent colors (black and white, for example), if instead of a bit we have 8, possible values \u200b\u200bare 2 ^ 8 = 256 colors, if you are 16 bits, 2 ^ 16 = 65,536 colors; if 24 bits, 2 ^ 24 = 16.777216 colors, etc .
When we scan an image to select the method of scanning or resolution, which is based in dots per inch (dpi), the higher this scan will cost more and more details of the generated photo scanning, to select this value we must take into account the use to which it is going to give that image, if it is to save on your computer or hang it on a website, etc, no use to be high, however if you need is high if you want to do is print that image, or touch up a small part of it. Above 300dpi is only worthwhile if a photo is scanned, we will expand and / or touch a part of the picture and then print it if it is to print the same size will leave us with the same quality scanned at 300dpi, but the size file will be much higher and therefore the computer will cost you more to work with the time and cost over the printing process. Another process
Scanning quite used is called OCR consisting recognition scanner (through a specific software that implements this function) of the scanned characters in a text so you can use that text scanning a word processor (momo eg Word) rather than treating it as a simple image, so you can edit, tweak, etc. comfortably.
This table (I have some time and not mine, can not remember where the serve, I apologize to the author) gives us an idea of \u200b\u200bwhat it would take a digital image in various ways
Let's talk only of the typical desktop scanner to scan all know photography documents, etc, since there are other types of scanners such as barcode (which are those using eg. in supermarkets for reading product codes on the boxes and know the price) and other ...
function this device is the scan images, ie to translate his physical form to digital form that can be understood by the computer, and then it can store, edit, print, etc.
THE most important component of the scanner and performing the work of interpretation is the lens CCD (Charge Coupled Device = charged coupled device (loading refers to electric charge)) expressing the variation color light into electrical signals so that the pc can understand, a factor taken into account together with the speed , depending upon the type of port it is connected to the computer and therefore what makes the speed data transfer. Today the most common is that they are USB 2.0, so we get a relatively quick and inexpensive scanner, some time before we find USB extension parallel port scanner (very slow) and much faster SCSI port, especially the latest models with SCSI-2 pulled even today compared to a still very fast USB.
quality value image we can provide a flame scanner color depth, also called scanner resolution is measured in bits. A bit take 2 values, which can represent colors (black and white, for example), if instead of a bit we have 8, possible values \u200b\u200bare 2 ^ 8 = 256 colors, if you are 16 bits, 2 ^ 16 = 65,536 colors; if 24 bits, 2 ^ 24 = 16.777216 colors, etc .
When we scan an image to select the method of scanning or resolution, which is based in dots per inch (dpi), the higher this scan will cost more and more details of the generated photo scanning, to select this value we must take into account the use to which it is going to give that image, if it is to save on your computer or hang it on a website, etc, no use to be high, however if you need is high if you want to do is print that image, or touch up a small part of it. Above 300dpi is only worthwhile if a photo is scanned, we will expand and / or touch a part of the picture and then print it if it is to print the same size will leave us with the same quality scanned at 300dpi, but the size file will be much higher and therefore the computer will cost you more to work with the time and cost over the printing process. Another process
Scanning quite used is called OCR consisting recognition scanner (through a specific software that implements this function) of the scanned characters in a text so you can use that text scanning a word processor (momo eg Word) rather than treating it as a simple image, so you can edit, tweak, etc. comfortably.
This table (I have some time and not mine, can not remember where the serve, I apologize to the author) gives us an idea of \u200b\u200bwhat it would take a digital image in various ways
In The scanner can attach an adapter to dwindle devices, or a sheet feeder device, so that the scanner without having to be placed one by one, just because the cover is incorporating versatile scanner can even decouple large objects such as books and even can prove called physical scan on the scanner is to get something other than a photo or 3D 2D text but something such as a watch or a pen and see that the result is even better to photograph the object.
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