1. BARCODE - TECHNOLOGY
Presentation by Rohit Kumar
Name: Rohit Kumar
B.tech( CSE) - 3rd sem.
Roll No. : 19134501029
Presentation On

2. Key Points :
• What is barcode?
• Barcode Types and different types of codes
• How barcode is made?
• How does barcode works?
• Barcode scanner
• Why use barcodes?
• Application of barcode.
• Advantages
• Disadvantages

3. WHAT IS BARCODE?
 it is an automatic identification technology.
 Barcode is a predefined format of dark 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.

4. About Barcode Technology:
A Barcode is a square or rectangular image containing a series of
analogous black lines and white spaces of varying widths.
Barcode is a machine-readable code in the form of numbers and an outline
of parallel lines of varying widths, printed on a commodity.
Hence a Barcode fundamentally is a way to encode information in a
pictographic pattern that a machine can read.
The combination of black and white bars signifies different text characters
which follow a set algorithm for that particular Barcode.
Fig. Barcode

5. There are two types of Barcode:
One is 1D (1-Dimensional) and other is 2D (2-Dimensional).
“1D” Barcode is used in normal products like groceries, pen, and electronic
equipment’s etc.
“2D” is similar to 1-Dimensional Barcode, but it can store more data per
unit area as compared to the 1D. You must have seen the use of 2D Barcode in
the Paytm App.
Fig 1: Types of Barcode

6. DIFFERENT CODES
 Defines 43 Characters.
 Typically used in non-retail areas.
 Arguably the simplest barcode.
Code 39

7. DIFFERENT CODES
 Defines the entire 128 ASCII character set.
 Typically used in shipping/retail.
Code 128

8. How Barcode is made?
A Barcode has 95 Blocks.
Fig 2: 95 Blocks of Barcode
The Barcode is transcribed in the 12 blocks out of 95 blocks.
Fig 3: 12 Blocks of Barcode
Out of these 95 blocks three blocks are named as the: Left guard; Centre guard; and Right guard.
2
3
1

9. How does Barcode works?
As we know that a Barcode is a square or rectangular image containing a
series of parallel black lines and white spaces. The information is programmed
among the length of each shaded line and the space between them.
A scanning device uses a laser to "read" the Barcode by scanning in the
unique bar of shaded lines.
A Barcode scanner reads the lines from left to right.
A Barcode scanner reads the pattern of black and white bars which turns the
information in the binary code (0 or 1).
The computer reads the information in the binary forms only and the
same is displayed on the screen of the monitor.

10. 1.India: 890
2.United States and Canada: 00 -13
3. France: 30-37
4. Germany: 40-44
5. Japan: 45-49
6. Russia: 46
7. Taiwan: 471
8. Sri Lanka: 479
9. Philippines: 480
10.Hong Kong: 89
11. United Kingdom: 50
12. China: 690-692. (Singh, 2018).
Barcode assigned to different countries of the world:-

11. Barcode Scanner

12. HOW BARCODE SCANNER WORKS?
 Barcode scanners are made of 3
different parts: an illuminator, a
convertor, and a decoder.
 The illuminator shoots out a line of
light (typically red) at the barcode.
 Light will reflect from the barcode
(from anywhere that is not black) in
the form of a wave.
 The convertor converts the wave
into a readable form for the device.
 Decoder reads the converted
information.
Light from Scanner
Barcode
Light Reflection

13. QR CODES
• Certain applications on a smart phone /
portable gaming device can scan QR
codes (i.e. ZXing on Android)
• Instead of bouncing off an image via light,
QR Codes are interpreted from a picture
skipping the light wave process.

14. About QR Code :
A QR code is a type of matrix bar code or two-dimensional code that can store
data information and designed to be read by Smartphone.
QR stands for “Quick Response” indicating that the code contents should be
decoded very quickly at high speed. The code consists of black modules arranged in
a square pattern on a white background.
The QR code was designed to allow its contents to be decoded at high speed.
The popularity of QR codes is growing rapidly all around the world. Nowadays,
mobile phones with built-in camera are widely used to recognize the QR Codes.

15. The QR code system consists of a QR code encoder and decoder. The encoder is
responsible for encoding data and generation of the QR Code, while the decoder
decodes the data from the QR code
Fig. Working (overview) of QR Code

16. QR CODES
• Interpretation of the code is that excluding the
no zones, each black module is a 1 bit and a
white one is a 0 bit.
0 1

17. Why use barcodes?
 As far back as the 1960’s ,barcode were used in industrial work environments.
some of early implementations of barcode included the ability identify rail , road ,car etc.
 In the early 1970’s, common barcodes started appearing on grocery shelves. To automate the
process of identifying grocery items , UPC barcodes were placed on Products.
 Today , barcodes are just about everywhere and are used for identification in almost all types of
business.
 When barcode are used in business process, procedures are automated to increase the
productivity and reduce human error .

18. APPLICATION OF BARCODE
Bar code is essentially used for 100% accurate & speedy data entry.
The major applications are -
 Retail
 Manufacturing
 Quantity and Quality control
 Packing
 Ware housing
 Service industry such that , Industry , Hospital and Library Management
 Export industry

19. Advantages
 REPRESENT UNIQUE IDENTITY OF A
PRODUCT
 ACCURACY OF DATA INPUT ( ERROR
FREE)
 LABOUR SAVING BY AVOIDING MANUAL
SYSTEM
 MORE ACCURATE DESPATCH
 COST EFFICIENT
 REAL TIME DATA COLLECTION
 MEASUREMENT OF WORK IN
PROGRESS THROUGHOUT THE
FACTORY
 RAPID ACCESS TO TOTAL
PRODUCTION COSTS

20. Disadvantages
 System Failure may cost more delays.
 Scratched or crumpled barcode may cause problems.
 Data must be coded in the barcode .
 In laser scanning, durability and cost are the two disadvantage .

21. Thank You