barcode ppt

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Welcome To Presentation Welcome To Presentation On On PRESENTED By: By: NICKEY AGARWAL NICKEY AGARWAL B.Tech (VIth Sem B) B.Tech (VIth Sem B) Electrical and Electronics Electrical and Electronics Engineering Engineering BARCOD BARCOD E E Friday, May 6, 2 022 1

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Page 1: Barcode Ppt

Welcome To Presentation OnWelcome To Presentation On

PRESENTED By: By: NICKEY AGARWALNICKEY AGARWAL B.Tech (VIth Sem B)B.Tech (VIth Sem B) Electrical and Electronics Electrical and Electronics EngineeringEngineering

BARCOBARCODEDE

Monday, April 10, 2023

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Page 2: Barcode Ppt

Introduction of Introduction of BarcodeBarcode

Bar Code is a method of automatic identification and data collection. Bar Code has a series of bars and spaces representing alphanumerical information. Bar Code uses the binary system for coding and decoding. Each bar represents ‘1’ s

and space represent ‘0’ of binary system . Barcode, also known as Universal Product Code (UPC) Barcode.

Example of the bar code from a 3-litre bottle of Diet Coke

Here the Coke's manufacturer ID is 049000.

Page 3: Barcode Ppt

History of BarcodeHistory of Barcode

1952 First patent was issued to Joseph Woodland & Bernard Silver.

1973 Mr. George Laurer of IBM conducted research work and invented a code in rectangular bars. The Universal Product Code was the first bar code symbology widely adopted in April 1973.

1974 UPC become the first consumer item ever scanned and that was the beginning of the bar code world.

2011 UPC led to the adoption of the EAN code format, similar to UPC, in December 1976 and spread around the globe compared to what it was in 70’s

Page 4: Barcode Ppt

Code Info.Code Info.

The coupon code is interesting (number system character 0). The 75678 is Post's manufacturer ID. The next three digits (164) are called the family code. The next two digits (12) are a value code. The final digit(5) is the normal check digit .

When the coupon is scanned the Point of sale(POS) computer:When the coupon is scanned the Point of sale(POS) computer:

1. Decodes the family code

2. Checks to make sure the customer purchased an item from the family

3. Decodes the value code

4. Sends the discount back to the cash register

Page 5: Barcode Ppt

Check DigitCheck Digit

1. Add together the value of all of the digits in odd positions (digits 1, 3, 5, 7, 9 and 11).0 + 5 + 7 + 1 + 4 + 2 = 19

2. Multiply that number by 3.19 * 3 = 57

3. Add together the value of all of the digits in even positions (digits 2, 4, 6, 8 and 10).7 + 6 + 8 + 6 + 1 = 28

4. Add this sum to the value in step 2.57 + 28 = 85

5. Take the number in Step 4. To create the check digit, determine the number that, when added to the number in step 4, is a multiple of 10.85 + 5 = 110

The check digit is therefore 5The check digit is therefore 5

The last digit of the UPC code is called a check digit.

Page 6: Barcode Ppt

•There are lots of types of barcode, but the common one we all see all the time is called UPC, the Universal Product Code. •Each digit is coded by two black and two white stripes. The stripes have widths of from 1 to 4 units, and the total width for each digit is always seven units.

Lets Build Barcode

Page 7: Barcode Ppt

ExampleExample

WIRELESS COMMUNICATIONSTHE CODE FOR THIS

BOOK IS781871307436

Page 8: Barcode Ppt

Barcode printingBarcode printing

Bar Code Print Quality is a must. Some print technologies are better suited to bar coding than others.

KEY-FEATURES-:

• Resolution – Dots Per Inch (DPI)Print heads generally come in resolutions of 203dpi, 305dpi or 600dpi

• Interfaces Printers can usually be specified with specified with a serial or parallel interface

• Software

Most printers come with Windows drivers, allowing you to print from software packages such as Word

Page 9: Barcode Ppt

Barcode Barcode TechnologyTechnology

Bar Code technology became universally accepted in 1966.

Barcode has three major components –

a)Software installed in a computer generates a unique bar code- the black & white lines which actually represents a unique identification tag.

b)Special bar code printer – printed & pasted on product.

c)Bar code reader – reads & identifies the unique code & matches with the details of product already present in the computer.

We must have a reader to read the bar codes into the computer. The reader includes:

·         1. An input device to scan the bar code·         2. A decoder to convert the symbology to ASCII text. 3. A cable to connect the device to your computer

Page 10: Barcode Ppt

Barcode readerBarcode reader

A barcode reader, also called a price scanner or point-of-sale (POS) scanner,

Is a hand-held or stationary input device Used to capture and read information. Consists of a scanner, a decoder and a cable. A bar code can best be described as an "optical Morse code." Series of black bars and white spaces

There are five basic kinds of barcode readers – There are five basic kinds of barcode readers – 1. pen wands2. slot scanners3. charge-couple device (CCD) scanners4. image scanners5. laser scanners.

Page 11: Barcode Ppt

Working of Barcode readerWorking of Barcode reader

1) A typical Bar Code Reader kit consists of Scanner, Decoder, and Cable that interfaces the Decoder to the computer.

2) The Scanner scans the Bar Code symbol.

3) It then captures the bars and spaces of the bar code.

4) Then it sends it to the decoder.

5) The decoder then translates the bars and spaces into corresponding electrical output.

6) Finally it transmits that data to the computer in a traditional data format.

Page 12: Barcode Ppt

Advantages & Disadvantages of Advantages & Disadvantages of BarcodeBarcode

Advantages of Barcode:-

1. Speed -- For 12 characters of data, keyboard entry takes 6 seconds. Scanning a 12 character barcode takes .3 seconds.

2. Accuracy -- The error rate for typing is one substitution error in every 300 characters types. Error rated for barcode range from 1 substitution error in every 15,000 to 36 trillion characters scanned

Disadvantage Of Barcode

1. Source of additional cost -- The only disadvantage is that data is coded in the barcode. This can be an additional cost.

However the key to an effective barcode system is to generate the However the key to an effective barcode system is to generate the barcode as cost to the source of the data as possible. barcode as cost to the source of the data as possible.

Page 13: Barcode Ppt

Barcode TypesBarcode Types

Universal Product Code(UPC) and European Article Number (EAN) in general are the two types of bar codes.

Grocery industry formally established UPC as the standard bar code symbology for product marking.

There are five versions of UPC & two versions of EAN code. The valid characters are 0,1,2….9.

Out of five versions of UPC code two versions namely UPC-A and UPC-E are widely used. Other three versions namely UPC-B, UPC-C and UPC-D are not in wide use.

Two versions of EAN are EAN-13 and EAN-8.

Page 14: Barcode Ppt

Barcode Applications Barcode Applications

Bar Code is essentially used for 100% accurate & speedy data entry. The major applications are –

• Retail outlets.• Manufacturing• Quality control• Packing • Ware housing• Service industry such as Courier Industry, Hospital and Library Management • Export Industry