1. PRESENTED BY-
DHANANJAY PRAJAPATI
(1452510903)
B.TECH 3RD
YEAR
DEPARTMENT OF COMPUTER SCIENCE
&ENGINERING
Contact Number-9839990389

2. CONTENT
INTRODUCTION
HISTORY OF BAR CODE
TYPES OF BAR CODE
DATA ENTRYTECHNIQUES
BENEFITS OF BAR CODE
BAR CODETERMINOLOGY
BAR CODE SCANNERS
BAR CODE APPLICATIONS
REFERENCE

3. INTRODUCTION
Bar code is a automatic identification technology
Bar code is a predefined format of dark bars and white spaces
Structured to contain a specific piece of information
Bar code allows real-time data to be collected accurately and
rapidly
Combination of bar code technology with computer and
application software improves performance, productivity and
profitability

4. HISTORY OF BAR CODE
In 1949 Bernard Silver, a graduate Of Drexel Institute of
Technology, heard the president of a local food chain ask for a
system that automatically read product information upon
checkout.
Norman Woodland one of the silver’s student was the one to
give the idea of using ultraviolet sensitive ink.
They made a barcode reader from a 500 watt lamp.
Barcodes started to spread on products in the 1970, when the first
barcode readers started to enter the market.
It was at the same time as the UPC-code was presented for
standard product marking.EAN was presented 1977 and was made
to match the UPC

5. DISCREATE SYMBOLOGY

6. CONTINOUS SYMBOLOGY

7. TYPES OF BAR CODE
There are two types of barcodes: Linear barcode and 2D
barcodes
Some examples include:
LINEAR BARCODES 2D BARCODES
Code 128
(Shopping)
Data Matrix(Automotive
item identification)
UPC(Items for sale
worldwide)
PDF417(Varity of
application, transport
Identify card, management)
Interleaved 2 of 5
(Commercially)
Maxi code(United Parcel
Service for sorting & tracking

8. DATA ENTRY TECHNIQUES
2.MANUAL METHODS
KEYBOARD
OPERATION
1 ERROR/300
CHARACTERS
1.AUTOMATICMETHODS
OPTICAL CHARACTER
RECOGNITION
MAGNETIC INK
MACHINE VISION
RADIO FREQUENCY
IDENTIFICATION
SMART CARDS
BAR CODE

9. BENEFITS OF BAR CODING
Represent unique identity of a product
Accuracy of data input (error free)
Aid effective management of resources and inventories
Labor savings by avoiding manual system
Cost efficient
Real time data collection

10. BENEFITS OF BAR CODING
Measurement of work in progress throughout
the factory
Rapid access to total production costs
More accurate dispatch

11. BAR CODE SYSTEM

12. THERMAL LABEL PRINTER

13. 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

14. BAR CODE 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

15. TYPES OF SCANNERS (READERS)
CONTACT READERS
Must touch or come in close proximity of symbol
Good where the label cannot be placed in an easy-to-view
position
Normally hand-held/stationary units
Common type is pen/wand reader
A high-density resolution wand used to read a low-density
symbol might see an ink spot as bar or an ink void as a space

16. CONTACT READERS

17. NON-CONTACT READERS
Reader need not come in contact with symbol
Scan distance may be from 6” to several feet depending
upon symbol size and scanner design
Hand-held, fixed beam readers

18. FIXED BEAM SLOT SCANNER

19. CHARGE COUPLED DEVICE
SCANNER
• CCD Scanners
are similar to
digital Cameras
in that they
have hundreds
of tiny LED
lights arranged
in one long
row capture a
digital image of
bar code

20. PORTABLE DATA COLLECTION
EQUIPMENT

21. BAR CODE APPLICATIONS
INVENTORY CONTROL
Portable readers
WORK-IN PROCESS TRACKING (WIP) COMPANY
INVENTORY
Raw materials
WIP (Components, Assemblies, Semi finished Products)
Finished Products
SHIPPING
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

22. BAR CODE APPLICATIONS
• 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
I. Blood group
II. Expiry date
III. Donor traceability

23. REFERENCE
www.wikipidia.org
 www.idautomation.com

24. Thank You