i want to some information about barcode technology,thanks!?
465932
http://en.wikipedia.org/wiki/Barcode
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
99731
Reading a barcode value always needs a textbox. What is the use of Keypress event... No use.\n\nNormally if you created a textbox and set the focus to it before firing the barcode scanner you'll get the return data in your textbox instantly.
260657
http://www.kamban.com.au/prodtamkbd.htm\n\nhttp://www.microsoft.com/globaldev/keyboards/kbdintam.htm
176504
WHICH CODE YOU ARE ASKING......PLZ CLEARIFY.......
200127
there is no price information encoded in a bar code. When the scanner at the checkout line scans a product, the cash register sends the UPC number to the store's central POS (point of sale) computer to look up the UPC number. The central computer sends back the actual price of the item at that moment. \nThis approach allows the store to change the price whenever it wants, for example to reflect sale prices. If the price were encoded in the bar code, prices could never change. On the other hand, not encoding a fixed price gives the store an easy way to rip off customers. When you hear about "scanner fraud" in the news, that is what the newsperson is talking about. It is incredibly easy for a store to mistakenly or purposefully overprice an item.
456346
bar code readers are just like keyboards..\nyou can have a text box and when the reader scans the barcode, the chars will be typed in the textbox... of course the textbox needs to have the focus...
375596
http://www.barcodesinc.com/free-barcode-font/\n\nThey have a free code 39 barcode font.
143135
need more information
251306
Here are some websites.  The first one is the material I am most familiar with.  It has lots of information about programming for those who are visually impaired.\n\nI hope this helps.
1096255
Each 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.
424724
Best ones are Barco www.barco.com
139464
http://www.google.com/search?hl=en&q=keylogger+c%2B%2B+code&meta=
768259
Take a look at http://www.google.com/codesearch\nThe link below searches for some example code for your keywords.
71479
This is not the place that you should be looking for serial numbers.  But, may I ask why are you trying to use such an old piece of software?
87118
It depends on what the microchip does, if its used in treating any illness or assists with any disabilities, eg: a implantable microprocessor that would aid the deaf in hearing, I am all for it. If its for vanity or biological enhancment or human tracking, no way. We are not canned products to be barcoded and categorised.
565548
Right here:\n\nhttp://www.phila.gov/li/codes/PlumbingCode.pdf\n\nHappy reading.