what is barcode scanner
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Máy Quét Mã Vạch 2D Denso AT10Q-Máy quét mã vạch 2D hiệu suất quét cao. | Công Ty Công Nghệ Trí Vinh

Công Ty Công Nghệ Trí Vinh - Máy quét mã vạch 2d Denso AT10Q đọc tốt các mã vạch nhỏ in trên linh kiện điện tử, kể cả các mã vạch nhò
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Máy đọc mã vạch là gì? Cách chọn lựa phù hợp với nhu cầu hiện tại của doanh nghiệp?

Máy đọc mã vạch là gì? Cách chọn lựa phù hợp với nhu cầu hiện tại của doanh nghiệp? | what is barcode scanner | Scoop.it
Công ty TNHH Tầm Nhìn Toàn Cầu - Máy in hóa đơn, máy bán hàng, máy quét mã vạch, máy in mã vạch, máy kiểm kho, products of bar code, retail systems, barcode scanners, barcode printers, receipt printer...
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http://www.vinapos.com.vn/solutions/713/what-is-barcode-scanner-.html

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A bar code consists of white and black bars

A bar code consists of white and black bars | what is barcode scanner | Scoop.it

Principles of bar code reading

A bar code consists of white and black bars. Data retrieval is achieved when bar code scanners shine a light at a bar code, capture the reflected light and replace the black and white bars with binary digital signals.
Reflections are strong in white areas and weak in black areas. A sensor receives reflections to obtain analog waveforms.
The analog signal is converted into a digital signal via an A/D converter. (Binarization)
Data retrieval is achieved when a code system is determined from the digital signal obtained. (Decoding process)
Types of bar code scanners

CCD method

This method uses a semiconductor device called CCD(Charge Coupled Device), which converts light signals into electric signals.

The CCD method bar code scanner has a built-in light. A scanner shines this light at a bar code and its reflection is captured via CCD for reading. A bar code is captured once, allowing fast reading. There are no movable parts and impact resistance is excellent.
Laser method

Laser light is shone on the label surface and its reflection is captured by a sensor (laser photo detector) to read a bar code. A laser beam is reflected off a mirror and swept left and right to read a bar code Using laser allows reading of distant and wide bar code labels.
Pen method

This method only has a LED light source and a sensor to capture its reflection. Since a person moves a scanner to read a bar code, practice is required for operation. The mechanism is simple, making this method inexpensive.
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104 Pho Duc Chinh , Ward.1, BInhThanh Dict, HCMC, VietNam

Hotline: +84 903 803810

http://tvintec.com.vn/
Barcode Scanners Barcode Label Printer - Receipt Printer - POS Systems - Fingerprint Systems
- Weighing Systems - Cash Drawers - Card Printers - LS Retail

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Bút Touch8, biến màn hình thường thành cảm ứng cho Windows 8

Bút Touch8, biến màn hình thường thành cảm ứng cho Windows 8 | what is barcode scanner | Scoop.it
Công ty TNHH Tầm Nhìn Toàn Cầu - Từ khi Microsoft ra mắt Windows 8, rất nhiều máy tính và máy tính bảng màn hình cảm ứng cũng ra đời từ đó, và nếu đã từng dùng qua màn hình cảm ứng trên Win8, chắc chắn đó sẽ là một trải nghiệm tuyệt vời.
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http://www.vinapos.com.vn/news/722/but-touch8-bien-man-hinh-thuong-thanh-cam-ung-cho-windows-8

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What Is Fingerprinting?

What Is Fingerprinting? | what is barcode scanner | Scoop.it
 Fingerprinting is the act of taking impressions of a person's fingerprints to be used for identification purposes.
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What Is Fingerprinting?

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