Barcode technology
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This document provides an overview of barcode technologies. It defines a barcode as an optical machine-readable representation of data attached to an object. The document outlines the main components of a barcode, including a quiet zone, start/stop codes, data, and a check digit. It describes the two most common types of barcodes - linear and 2D barcodes. The document also discusses how barcode scanners work to read barcodes and send the data to a computer database to look up item information. Various types of barcode scanners are presented. Overall advantages of barcodes are highlighted such as providing accurate and cost-efficient product identification.
Barcode technology
- 2. CONTENTS ? INTRODUCTION ? WHAT IS A BARCODE? ? TYPES OF BARCODE. ? STRUCTURE OF BARCODE. ? HOW IT WORKS. ? BARCODE SCANNERS. ? TYPES OF SCANNERS. ? ADVANTAGES. ? CONCLUSION.
- 3. INTRODUCTION ? During a shopping excursion to a shopping mall, you would have noticed the cashier scanning your products using some laser to produce a bill. ? What actually he is doing that he is reading the product barcodes using a Laser/Barcode scanner. ? Barcode scanner reads the code, data is sent to the computer, and computer looks up into the database for the price and description of the item.
- 4. WHAT IS BARCODE? ? Barcode is an optical machine readable representation of data relating to the object to which it is attached. ? Barcodes are structured to contain specific product related information. ? It basically encodes alphanumeric characters and symbols using black and white stripes, also called bars.
- 5. TYPES OF BARCODE ? 1) Linear Barcode
- 6. STRUCTURE OF BARCODE ? Quiet Zone –The minimum required space for bar code scan-ability, preceding the Start Character of a bar code symbol. ? Start Code –Indicates the start of the barcode. These are special bar code characters & they signify the start of data to the scanner/reader. Data –The actual data the barcode stores. ? Check Digit –Check digit (not always present) is a mathematical sum that is used to verify the accuracy of the other elements of the barcode. ? Stop Code – Indicates the stopping point of the barcode.
- 8. Barcode scanners ? A barcode reader (or barcode scanner) is an electronic device that can read and output printed barcodes to a computer. ? Barcode scanners may be of many types based on their technologies used to scan the barcodes.
- 10. ADVANTAGES ?Represent unique identity of a product. ?Cost efficient accuracy of data input. ?Real time data collection. ?Bi –directional symbology.
- 11. THANKYOU!!!!