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it's a overview of a new technology ...
it's a modified version of bar cod that's why it's also called 2D code.
QR Code is a matrix code (or two-dimensional bar code) created by Japanese corporation Denso-Wave in 1994.
The "QR" is derived from "Quick Response", as the creator intended the code to allow its contents to be decoded at high speed.
Data is translated into QR Code by QR Generator.
QR Code is scanned by mobile camera phone having QR
Software interprets the code.
cell phone displays the text or ask for permission to launch a
browser to display the specified web page.
In 1970,IBM developed UPC symbol consisting of 12 digits of no:
The Universal Product Code (UPC) is a linear barcode that is widely used for tracking trade items in stores.
In 1974,Code 39 which can encode approx 30 digits of alphanumeric characters was developed
Later it led to the development of Code 128,which can encode full ASCII
In early 1980s,Multistage symbols were developed, it can encode 100 digits of characters. Egs are Code 16K and code 49.
In 1994,Multirow symbols were developed by extending multistage symbols and into matrix symbols where data were arranged in matrix.
This matrix code is QR Code, contains 7000 digits of characters at max including Kanji characters.
BARCODE is a method of automatic identification & data collection, also known as the “Universal Product Code” (UPC). BARCODE is use the Binary System for coding & decoding. It has the series of bars & space representing alpha numeric information. Each bar represent “1” &space represent “0”.
A barcode is an optical machine-readable representation of data, which shows certain data on certain products. Originally, barcodes represented data in the widths (lines) and the spacings of parallel lines, and may be referred to as linear or 1D (1 dimensional) barcodes or symbologies. They also come in patterns of squares, dots, hexagons and other geometric patterns within images termed 2D (2 dimensional) matrix codes or symbologies. Although 2D systems use symbols other than bars, they are generally referred to as barcodes as well. Barcodes can be read by optical scanners called barcode readers, or scanned from an image by special software
In point-of-sale management, the use of barcodes can provide very detailed up-to-date information on key aspects of the business, enabling decisions to be made much more quickly and with more confidence. For example:
• Fast-selling items can be identified quickly and automatically reordered to meet consumer demand,
• Slow-selling items can be identified, preventing a build-up of unwanted stock,
• The effects of repositioning a given product within a store can be monitored, allowing fast-moving more profitable items to occupy the best space,
• Historical data can be used to predict seasonal fluctuations very accurately.
• Items may be repriced on the shelf to reflect both sale prices and price increases.
• When a manufacturer packs a b