what are barcodes values? what do you see on screen while pressing the barcode reader button?
342076
Bar-code values were created to help in billing and tracking of  goods. The bars are nothing but numbers represented pictorially. Bars of different thickness represent different numbers. A common standard is UPC bar-code that specifies the width of each number. One part of the bar-code represents the manufacturer and the other part is specific to the product. When a bar-code label is scanned, the barcode scanner scans the width of the bars and the software converts it to the information corresponding to the particular product like price, etc.
79969
There are lots of types of barcode, but the common one we all see all the time is called UPC, the Universal Product Code. \n\nEach digit is coded by two black and two white stripes. The stripes have widths of from 1 to 4 units, and the total width for each digit is always seven units.\n\nThis code is not quite all there is to it, however. Some digits of the barcode are reversed, so that they read right to left. Part of the code has black and white inverted, so black stripes are white and vice versa. This helps cut down errors and allows a computer to work out if the code was read from the wrong end when it was scanned.
835983
use the legend to read the map\nlegend tells u what the symbols represent on the map
278590
You ae confusing yourself!!! 0 - 255 is the range of ASCII characters. For eg. 65 stands for A and 97 stands for a and 1 stands for ☺. So you try 256 it will again display ☺ because there are only 255 characters. To know the value of an ASCII character press Alt + the req no. For eg Alt + 129 yeilds to ü. Go ahead try it yourself in any text editor. So a character variable can store only characters (ie. 0 - 255) NOTE:- Even all numbers are characters. Eg. Alt + 49 yeilds to 1 which is considered as a character. You know what I mean??? Don't you???
1140215
if you only want to read bar codes, time ago i downloaded the font types of the barcodes, while i wrote something in a textbox, i converted the font into a barcode font, there are several types, and when you read them with the scanner, you read the code, the secret is to write an asterix before and after the code
41252
What is the goal of your question?\nAre you asking about virus scanner or photo scanner or barcode scanner....etc??\n\nAnyway i have given the following address for you.\n\ncomputer scanner:\nhttp://www.computerhope.com/help/scanner.htm#01
268342
There is probably a function key labeled "Fn".  And you will see keypad numbers in blue labeled on some of the existing keys.  You can use the same keystroke for ê.\n\nYou can also use the character map, located under Start->Programs->Accessories->System Tools->Character Map.\n\nEnjoy!
809534
Assuming you're using a Windows based PC, you may find this useful:\n\nStart -> Run -> type 'charmap' and enter.\n\nThis program will show you all available characters for each font and their corresponding keystroke combination.\n\nBy holding ALT and typing 0176 on the numpad you get: °
355663
No.  Barcodes are black and white.
263779
To read barcodes? lol Many products have them. You could find out additional information about the product, I guess.
665780
press the alt key and press 3 on your number keypad. you'll get a ♥, different numbers give you different symbols. Have fun!
340298
There are different bar code standards, some of them are:\n\nEAN/UPC (ISO/IEC 15420)\nCode 128 (ISO/IEC 15417)\nCode 39 (ISO/IEC 16388)\nInterleaved 2-of-5 (ISO/IEC 16390)\nPDF417 (ISO/IEC 15438)\nMaxicode (ISO/IEC 16023)\nData Matrix (ISO/IEC 16022)\nQR Code (ISO/IEC 18004)\n\nThe most common is EAN/UPC.  Information on decoding it can be found here:\nhttp://electronics.howstuffworks.com/upc4.htm\n\nI hope this info helps, as instructions on each type would be exteremely exhausting to type out.
315031
http://www.milk.com/barcode/\n\nhttp://www.taltech.com/TALtech_web/resources/intro_to_bc/bcpwork.htm\n\nhttp://www.codeproject.com/dotnet/barcodeImaging.asp
636390
A linear bar code is a binary code (1s and 0s). The lines and spaces are of varying thicknesses and printed in different combinations. To be scanned, there must be accurate printing and adequate contrast between the bars and spaces. Scanners employ various technologies to "read" codes. The two most common are lasers and cameras. Scanners may be fixed position, like most supermarket checkout scanners, or hand-held devices, often used for the taking of inventories. There should be (but typically is not,) a distinction drawn between the code, which is a structure for the conveyance of data, and the symbol, the machine-readable representation of the code. The code is text, which can be translated into a multiplicity of languages - English, French, Japanese, symbol.\n\nNotwithstanding its inauspicious beginning, the bar code has become a remarkable success, a workhorse in many and varied applications. One of the first successful bar codes, Code 39 developed by Dr. David Allais, is widely used in logistical and defense applications. Code 39 is still in use today, although it is less sophisticated than some of the newer bar codes. Code 128 and Interleaved 2 of 5 are other codes that attained some success in niche markets.
222426
For one, it contain all digits 0 - 9 which appears only once. They are in alphabetical order when spelt out. And it gives me two points to Yahoo! Answers.
1015591
♀ ♂ ♠ ♣ ♥ ♦ ♪ ♫ and so on.\n\nStart Menu, Accessories, System Tools, Character Map\n\nLook for the word Character Set, change it to Unicode, and scroll down untill you see those symbols.
277394
Print Scrn (Print Screen) button on your keyboard....on a typical keyboard it is above the Insert/Home/ETC buttons.