Technology

History

Barcode Types

Barcode Printer

Inventory Management

Application

Software

Label Paper

Barcode Scanner

AI Barcode QRCode

Barcodes B

Barcodes C

Barcodes D

Barcodes E

Barcodes F

Robot Tech

Electronic

New Tech A

New Tech B

Psychology at Work

<<< Back to Directory <<<

How barcode scanner works

How barcode scanner works

Barcode scanners are fascinating devices that simplify our shopping experience and inventory management.

Let's delve into how they work:

Barcodes:

These black-and-white zebra stripes represent a line of numbers printed underneath them.

They're designed for computers to read quickly by scanning red LED or laser light across them.

You've probably seen them on everything from cereal boxes to library books.

How They Work:

Scanning Head:

The barcode scanner shines LED or laser light onto the barcode.

Reflection: Light reflects back off the barcode into a light-detecting electronic component called a photoelectric cell.

Pattern Generation: As the scanner moves past the barcode, the cell generates a pattern of on-off pulses that correspond to the black and white stripes.

Digital Data: The scanner sends this digital data to a computer program, which deciphers the final barcode.

Some scanners use a single photoelectric cell, detecting each part of the black-white barcode as you move the scanner head past the product or vice versa.

Barcode scanners come in various types, each based on different working principles.

1. Pen-Type Reader:

This type of scanner consists of a light source and a photodiode at the tip of a pen-like device.

When you move the pen across the barcode, it reads the black-and-white bars by detecting changes in light intensity.

Pen-type readers are simple and often used for basic applications.

2. Laser Scanner:

Similar to pen-type readers, laser scanners also use a handheld device.

However, instead of a simple light source, they employ a laser beam.

The laser scans across the barcode, and the reflected light provides information about the barcode pattern.

Laser scanners are commonly used in retail and industrial settings.

3. CCD (Charge Coupled Device) Scanner:

CCD scanners use a semiconductor device called a CCD to convert light signals into electric signals.

These scanners measure ambient light from the barcode without producing a beam of light.

CCD scanners are reliable and widely used for various applications.

4. Camera-Based Reader (2D Imaging Scanner):

These scanners have a small video camera installed.

They capture an image of the entire barcode and then decode the information using digital imaging software.

Camera-based readers are versatile and can read both 1D and 2D barcodes.

The choice of barcode scanner depends on the specific application and requirements. Whether it's a grocery store checkout or an industrial warehouse, there's a suitable scanner for every purpose.

 

CONTACT

cs@easiersoft.com

If you have any question, please feel free to email us.

 

https://free-barcode.com

 

<<< Back to Directory <<<     Barcode Generator     Barcode Freeware     Privacy Policy