Hi Priya

The bar code system is an identification system of articles by way of bar codes. It consists of a printed code consisting of a series of vertical bars that vary in width. Bar codes are capable of being "read" and decoded by bar code scanners. Bar codes are used to identify retail sales items, identification cards, library books and other products.

Thanks n regards

Suparn@

Answered by Suparna , an ibibo Master, at 11:42 PM on September 27, 2008

well, This is a symbol made of short black lines on a label, with a number below. Barcodes are used to identify library cards and library materials. Your library card has a barcode that holds your name and address, It's a unique code for any manufactured unit. With recordable CDs, this number is often printed in the clear inner ring of the disc. Some CD recorders can also read this information digitally. Bit Depth In color images, the number of colors used to represent the image.

Answered by Satya ~ , an ibibo Master, at 5:55 PM on September 05, 2008

Barcode:-The machine-readable representation of the UPC. Bar codes are read by a scanner that passes over the code and registers the UPC. The width of each black line and the subsequent white space between each line coincides with the numbers of the UPC.

Answered by alok , an ibibo Master, at 5:00 PM on September 05, 2008

The code uses a sequence of vertical bars and spaces to represent numbers and other symbols. A bar code symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character, and another quiet zone.

There is no one standard bar code; instead, there are several different bar code standards called symbologies that serve different uses, industries, or geographic needs. Since 1973, the Uniform Product Code (UPC), regulated by the Uniform Code Council, an industry organization, has provided a standard bar code used by most retail stores.

The European Article Numbering system (EAN), developed by Joe Woodland, the inventor of the first bar code system, allows for an extra pair of digits and is becoming widely used. POSTNET is the standard bar code used in the United States for ZIP codes in bulk mailing.

Answered by jaivir , an ibibo Master, at 5:00 PM on September 04, 2008

from my point of view,A bar code (often seen as a single word, barcode) is the small image of lines (bars) and spaces that is affixed to retail store items, identification cards, and postal mail to identify a particular product number, person, or location. The code uses a sequence of vertical bars and spaces to represent numbers and other symbols. A bar code symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character, and another quiet zone.
A barcode reader is used to read the code. The reader uses a laser beam that is sensitive to the reflections from the line and space thickness and variation. The reader translates the reflected light into digital data that is transferred to a computer for immediate action or storage. Bar codes and readers are most often seen in supermarkets and retail stores, but a large number of different uses have been found for them. They are also used to take inventory in retail stores; to check out books from a library; to track manufacturing and shipping movement; to sign in on a job; to identify hospital patients; and to tabulate the results of direct mail marketing returns. Very small bar codes have been used to tag honey bees used in research. Readers may be attached to a computer (as they often are in retail store settings) or separate and portable, in which case they store the data they read until it can be fed into a computer.

Answered by Madhurima , an ibibo Master, at 8:16 PM on September 03, 2008

A bar code (often seen as a single word, barcode) is the small image of lines (bars) and spaces that is affixed to retail store items, identification cards, and postal mail to identify a particular product number, person, or location.

The code uses a sequence of vertical bars and spaces to represent numbers and other symbols. A bar code symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character, and another quiet zone.

Answered by Shobhit , an ibibo Master, at 4:55 PM on September 03, 2008

A bar code (also barcode) is an optical machine-readable representation of data. Originally, bar codes represented data in the widths (lines) and the spacings of parallel lines and may be referred to as linear or 1D ( 1 dimensional) bar codes or symbologies. But they also come in patterns of squares, dots, hexagons and other geometric patterns within images termed 2D (2 dimensional) matrix codes or symbologies. It is important to note that both the patterns (lines, squares, dots, etc.) and spacings constitute the data encodation schema.
Contents
[hide]

* 1 History
* 2 Use
* 3 Universal Product Code (UPC)
* 4 Symbologies
o 4.1 Scanner/symbology interaction
o 4.2 Scanners (barcode readers)
o 4.3 Verifier (Pika inspection)
* 5 Benefits
* 6 Types of barcodes
o 6.1 Linear barcodes
o 6.2 2D barcodes
* 7 See also
* 8 References
* 9 Further reading
* 10 External links

Barcodes can be read by optical scanners called barcode readers or scanned from an image by special software. Barcodes are widely used to implement Auto ID Data Capture (AIDC) systems that improve the speed and accuracy of computer data entry. An advantage over other methods of AIDC is that it is less expensive to implement. It will cost about US$0.005 to implement a barcode compared to passive RFID which still costs about US$0.07 to US$0.30 per tag.

Answered by Om Prakash , an ibibo Master, at 2:58 PM on September 03, 2008

A bar code (often seen as a single word, barcode) is the small image of lines (bars) and spaces that is affixed to retail store items, identification cards, and postal mail to identify a particular product number, person, or location. The code uses a sequence of vertical bars and spaces to represent numbers and other symbols. A bar code symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character, and another quiet zone.
A barcode reader is used to read the code. The reader uses a laser beam that is sensitive to the reflections from the line and space thickness and variation. The reader translates the reflected light into digital data that is transferred to a computer for immediate action or storage. Bar codes and readers are most often seen in supermarkets and retail stores, but a large number of different uses have been found for them. They are also used to take inventory in retail stores; to check out books from a library; to track manufacturing and shipping movement; to sign in on a job; to identify hospital patients; and to tabulate the results of direct mail marketing returns. Very small bar codes have been used to tag honey bees used in research. Readers may be attached to a computer (as they often are in retail store settings) or separate and portable, in which case they store the data they read until it can be fed into a computer.

There is no one standard bar code; instead, there are several different bar code standards called symbologies that serve different uses, industries, or geographic needs. Since 1973, the Uniform Product Code (UPC), regulated by the Uniform Code Council, an industry organization, has provided a standard bar code used by most retail stores. The European Article Numbering system (EAN), developed by Joe Woodland, the inventor of the first bar code system, allows for an extra pair of digits and is becoming widely used. POSTNET is the standard bar code used in the United States for ZIP codes in bulk mailing. The following table summarizes the most common bar code standards.

Answered by Nishu's , an ibibo Master, at 2:45 PM on September 03, 2008

A bar code (also barcode) is an optical machine-readable representation of data. Originally, bar codes represented data in the widths (lines) and the spacings of parallel lines and may be referred to as linear or 1D ( 1 dimensional) bar codes or symbologies. But they also come in patterns of squares, dots, hexagons and other geometric patterns within images termed 2D (2 dimensional) matrix codes or symbologies. It is important to note that both the patterns (lines, squares, dots, etc.) and spacings constitute the data encodation schema.
Contents
[hide]

* 1 History
* 2 Use
* 3 Universal Product Code (UPC)
* 4 Symbologies
o 4.1 Scanner/symbology interaction
o 4.2 Scanners (barcode readers)
o 4.3 Verifier (Pika inspection)
* 5 Benefits
* 6 Types of barcodes
o 6.1 Linear barcodes
o 6.2 2D barcodes
* 7 See also
* 8 References
* 9 Further reading
* 10 External links

Barcodes can be read by optical scanners called barcode readers or scanned from an image by special software. Barcodes are widely used to implement Auto ID Data Capture (AIDC) systems that improve the speed and accuracy of computer data entry. An advantage over other methods of AIDC is that it is less expensive to implement. It will cost about US$0.005 to implement a barcode compared to passive RFID which still costs about US$0.07 to US$0.30 per tag.

For more visit :

http://en.wikipedia.org/w iki/Barcode

Answered by Ashish Yadav , an ibibo Wizard, at 2:44 PM on September 03, 2008

As Far as I am concern,A bar code (often seen as a single word, barcode) is the small image of lines (bars) and spaces that is affixed to retail store items, identification cards, and postal mail to identify a particular product number, person, or location.

The code uses a sequence of vertical bars and spaces to represent numbers and other symbols. A bar code symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character, and another quiet zone.

There is no one standard bar code; instead, there are several different bar code standards called symbologies that serve different uses, industries, or geographic needs. Since 1973, the Uniform Product Code (UPC), regulated by the Uniform Code Council, an industry organization, has provided a standard bar code used by most retail stores

Answered by Sharad Singh , an ibibo Master, at 1:49 PM on September 03, 2008