18-04-2011, 09:53 AM
PRESENTED BY:
ANUPAM KUMAR
anupam presentation.pptx (Size: 622.04 KB / Downloads: 212)
BAR CODE TECHNOLOGY AND ITS APPLICATIONS
BAR CODE TECHNOLOGY
• It is an automatic identification technology
• Bar code is a predefined format of dark bars and white spaces
• Structured to contain a specific piece of information
• It allows real-time data to be collected accurately and rapidly
• Combination of barcode technology with computer and application software improves performance, productivity and profitability
Magnification?
Barcodes are based on a 100% magnification.
The EAN13 standard allows for 80-200% to the nominal magnification.
Basically, the bigger the better!
Why use barcodes?
When barcodes are used in the business process, procedures are automated to increase productivity and reduce human error.
Whenever there is a need to accurately identify or track something, bar-coding should be used.
Instead of manually typing a customer identification number into a database, if the information is contained in a barcode, a data entry operator may scan it in. This would increase automation and reduce human error.
How Bar Codes are Read?
Bar codes are read by sweeping a small spot of light across the printed bar code symbol.
The scanner’s light source is being absorbed by the dark bars and reflected by the light spaces.
A device in the scanner takes the reflected light and converts it into an electrical signal.
BAR CODE SCANNERS
A device used to extract information optically from a Bar Code.
Bar Code symbol consists of series of vertical dark bars separated by light spaces.
When illuminated reflected light is detected by electro optical sensor.
The intensity of reflected light from the dark bars is less than that of spaces.
SCANNERS
Reflected light is converted into electrical voltage signals
Analog voltages are digitized into raw data
The decoder converts this data into the character data representation of the symbol’s code
APPLICATIONS …
ELECTRONIC DATA INTERCHANGE (EDI)
Direct communication between computers of two companies (Manufacturer & Vendor)
Industry-wide EDI standards
Reduces cost and saves time of business transaction
RETAIL APPLICATIONS
Super markets
Counter-mounted Bar Code scanners
Universal Product Code (UPC)
Price and description information
WARE HOUSING
HEALTH CARE APPLICATIONS
Drugs, devices, instruments
Identification of expiry date
Blood banking
Blood group
Expiry date
Donor traceability