How does a barcode work?
How does a barcode work?
I didn’t know what category to put this in, but i was wondering how it works because all it seems to be is a sticker printed with a bunch of lines on it, so i was wondering how it works…
Best answer:
it works
Under Forum
8 Comments for How does a barcode work?
1. Samantha M | February 25th, 2011 at 2:57 am
It has a special code
2. xxvietxthugzxx | February 25th, 2011 at 3:45 am
a bar code is like numbers. it is just a way of its thickness of lines and spaces for the computer to read.
3. fader1000101 | February 25th, 2011 at 4:03 am
it might be easier to read it and see pictures at this site
howstuffworks.com/upc.htm
than for me to copy paste all that in here
4. Leah | February 25th, 2011 at 5:00 am
The scanner picks up the barcode by reading the bars and spaces between them. Each barcode is unique and has slightly different spacing.
As the scanner picks up the bars it transfers the information to a computer where it matches the barcode with the item being purchased.
5. jav | February 25th, 2011 at 5:01 am
the thickeness and gap between all the lines represents a number normally the one you see below it and the barcode reader has allready had that number scaned in and a description added to it so when it gets scaned it recalls that info and uses it that why all the same packet of crisp have the same code and all one brand of can ect….
6. Ed | February 25th, 2011 at 5:40 am
The lines are dark against light and get translated into what a computer understands – 0s and 1s.
The universal product code is exactly what it says, a worldwide product recognition standard.
Some other users have developed their own barcode standards (eg libraries and post offices)
Barcodes can give instant sales and stock level data.
7. Rich | February 25th, 2011 at 5:42 am
They are based on binary math, zeros and ones. The bar is a one, and the white space is a zero. If you look close at a bar code, you may see some wider spaces or wider bars, Thats because two zeros in a row would need a double space, and two ones in a row would need double bars. Usually, the actual number represented by the bar code is listed under bars. The scanner “Reads” the number, looks up the product & price in the computer, then rings up the cost.
8. mdigitale | February 25th, 2011 at 6:30 am
The barcode is simply a number encoded as bars. A database is then used, in conjunction with the scanned barcode number, to obtain the details — price, description, etc.
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