PRESENTED BY- DHANANJAY PRAJAPATI(1452510903)B.TECH 3RD YEARDEPARTMENT OF COMPUTER SCIENCE &ENGINERINGContact Number-9839990389

CONTENTINTRODUCTIONHISTORY OF BAR CODETYPES OF BAR CODEDATA ENTRY TECHNIQUESBENEFITS OF BAR CODEBAR CODE TERMINOLOGYBAR CODE SCANNERSBAR CODE APPLICATIONSREFERENCE

INTRODUCTIONBar code is a automatic identification technologyBar code is a predefined format of dark bars and

white spacesStructured to contain a specific piece of informationBar code allows real-time data to be collected

accurately and rapidlyCombination of bar code technology with computer

and application software improves performance, productivity and profitability

HISTORY OF BAR CODEIn 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

DISCREATE SYMBOLOGY

CONTINOUS SYMBOLOGY

TYPES OF BAR CODEThere are two types of barcodes: Linear barcode

and 2D barcodesSome examples include:LINEAR BARCODES 2D BARCODES

Code 128(Shopping)

Data Matrix(Automotive item identification)

UPC(Items for sale worldwide)

PDF417(Varity of application, transportIdentify card, management)

Interleaved 2 of 5(Commercially)

Maxi code(United Parcel Service for sorting & tracking

DATA ENTRY TECHNIQUES2.MANUAL METHODS

KEYBOARD OPERATION1 ERROR/300

CHARACTERS

1.AUTOMATICMETHODSOPTICAL CHARACTER

RECOGNITIONMAGNETIC INKMACHINE VISIONRADIO FREQUENCY

IDENTIFICATIONSMART CARDSBAR CODE

BENEFITS OF BAR CODINGRepresent unique identity of a productAccuracy of data input (error free)Aid effective management of resources and

inventoriesLabor savings by avoiding manual systemCost efficientReal time data collection

BENEFITS OF BAR CODINGMeasurement of work in progress

throughout the factoryRapid access to total production

costsMore accurate dispatch

BAR CODE SYSTEM

THERMAL LABEL PRINTER

BAR CODE SCANNERSA device used to extract information

optically from a Bar CodeBar Code symbol consists of series of

vertical dark bars separated by light spacesWhen illuminated reflected light is detected

by electro optical sensorThe intensity of reflected light from the

dark bars is less than that of spaces

BAR CODE SCANNERSReflected 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

TYPES OF SCANNERS (READERS)

CONTACT READERSMust touch or come in close proximity of

symbolGood where the label cannot be placed in an

easy-to-view positionNormally hand-held/stationary unitsCommon type is pen/wand readerA 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

CONTACT READERS

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

FIXED BEAM SLOT SCANNER

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

PORTABLE DATA COLLECTION EQUIPMENT

BAR CODE APPLICATIONSINVENTORY CONTROL

Portable readersWORK-IN PROCESS TRACKING (WIP) COMPANY

INVENTORYRaw materialsWIP (Components, Assemblies, Semi finished Products)Finished Products

SHIPPINGELECTRONIC DATA INTERCHANGE (EDI)

Direct communication between computers of two companies (Manufacturer & Vendor)

Industry-wide EDI standardsReduces cost and saves time of business transaction

BAR CODE APPLICATIONS• RETAIL APPLICATIONS

Super marketsCounter-mounted Bar Code scannersUniversal Product Code (UPC)Price and description information

WARE HOUSINGHEALTH CARE APPLICATIONS

Drugs, devices, instrumentsIdentification of expiry dateBlood banking

I. Blood groupII. Expiry dateIII. Donor traceability

REFERENCEwww.wikipidia.org www.idautomation.com

Thank You