Bulk Barcode Generator - Plessey

Barcode Technology - Plessey Barcode               Hide the description

Plessey Code is a 1D linear barcode symbology based on pulse width modulation, developed in 1971 by The

Plessey Company plc, a British-based company. It is one of the first barcode symbology, and is still used in some rare libraries and for shelf tags in retail stores, in part as a solution to their internal requirement for stock control. The system was first used in the early 1970s by J.Sainsbury to identify all of its products on supermarket shelves for its product restocking system.

The chief advantages are the relative ease of printing using the dot-matrix printers popular at the time of the

code's introduction, and its somewhat higher density than the more common 2 of 5 and 3 of 9 codes. It has later led several variations as Anker Code by ADS Company, Telxon, and MSI (also known as Plessey modified). It is difficult to have the specifications for them nowadays and thus hard to tell the differences between them (except for MSI), because it was mainly available as a paper document and has since been discontinued..

Valid characters: 0123456789ABCDEF

Plessey is one of the many barcode formats currently in use.

A Barcode is a method of representing data in a visual, machine-readable form.

The barcode formats has two categories:

One-dimensional (1D) --- Barcodes represented data by varying the widths and spacings of parallel lines.

Two-dimensional (2D) --- Using rectangles, dots, hexagons and other geometric patterns to represented data.

Check digit:

The check code for error detection and correction is as CRC, using polynomial division. Is uses 2 characters, or 8 bits. The generator polynomial is {\displaystyle g(x)=x^{8}+x^{7}+x^{6}+x^{5}+x^{3}+1} g(x)=x^{8}+x^{7}+x^{6}+x^{5}+x^{3}+1 with n=8, in binary "111101001".

Human Readable:

Most barcodes display their corresponding values below them, which makes it possible to human read and manually  enter the barcode values into the equivalent system when the barcode label is worn out and cannot be read by the barcode scanner.

The Advantages of using barcodes:

Using a barcode system can make the working process simple and easy, so it can reduces the employee training time. It only takes a few minutes to master the barcode scanner to collecting data, employees no need to familiar with the entire inventory or pricing process. This also reduces the cost of employee training.

The barcode system is very versatile, it can be used for any necessary data collection. This may include pricing or inventory information or management information service system. In addition, because barcodes can be affixed to almost any surface, they can be used not only to track the product itself, but also to track the production process, shipments and equipments.

When barcodes are used in management information systems, they can promote better decision-making. Because data is obtained quickly and accurately, you can quickly obtain a full range of information for the entire company or organization, so it is possible to make more informed decisions. Better decisions can ultimately save time and money.

Barcodes are cheap and user-friendly, providing an indispensable tool for tracking data from pricing to inventory. The end result of a comprehensive bar code system is reduced overhead.

Most commonly used barcode types

EAN-13 code: Product barcode, universal, supports 0-9 digits, 13 digits in length, has grooved.

UPC-A code: Product barcode, mainly used in the United States and Canada, supports 0-9 numbers, 12 digits in length, has grooves.

Code-128 code: Universal barcode, supports numbers, letters and symbols, variable length, no grooves.

QR-Code: Two-dimensional barcode, supports multiple character sets and encoding formats, variable length, and has positioning marks.

Why are there many types of barcodes?

There are many types of barcodes because they have different uses and characteristics.

For example, a UPC [Universal Product Code] is a barcode used to label retail products and can be found on nearly every item sold and in grocery stores in the United States.

CODE 39 is a barcode that can encode numbers, letters and some special characters. It is commonly used in manufacturing, military and medical fields.

ITF [Interleaved Two-Five Code] is a barcode that can only encode an even number of digits. It is commonly used in the logistics and transportation fields.

NW-7 [also known as CODABAR] is a barcode that can encode numbers and four start/end characters. It is commonly used in libraries, express delivery and banks.

Code-128 is a barcode that can encode all 128 ASCII characters. It is commonly used in areas such as package tracking, e-commerce and warehouse management.

What is the historical origin of barcodes?

In 1966, the National Association of Food Chains (NAFC) adopted bar codes as product identification standards.

In 1970, IBM developed the Universal Product Code (UPC), which is still widely used today.

In 1974, the first product with a UPC barcode: a pack of Wrigley's gum was scanned in an Ohio supermarket.

In 1981, the International Organization for Standardization (ISO) approved Code39 as the first alphanumeric barcode standard.

In 1994, Japan's Denso Wave Company invented QR-Code, a two-dimensional barcode that can store more information.

Barcode application examples

Barcode Apps for Food Tracking: Apps that record the nutritional content, calories, protein and other information of the food you eat by scanning the barcode on the food label. These apps can help you record your eating habits, Manage your health goals, or understand where your food comes from.

Transportation and logistics: Used for ordering and distribution codes, product warehousing management, logistics control systems, ticket sequence numbers in international aviation systems. Barcodes are used in ordering and distribution in the logistics and transportation industry. They can be used to string Line Shipping Container Codes (SSCCs) are encoded to identify and track containers and pallets in the supply chain. They can also encode other information such as best before dates and lot numbers.

Internal supply chain: internal management of the enterprise, production process, logistics control system, ordering and distribution codes. Barcodes can store various information, such as item number, batch, quantity, weight, date, etc. This information can Used for tracking, sorting, inventory, quality control, etc., to improve the efficiency and accuracy of the company's internal supply chain management.

Logistics tracking: Barcodes are widely used in logistics tracking. It can be used to identify goods, orders, prices, inventory and other information. By affixing barcodes on packaging or shipping boxes, it is possible to achieve warehouse entry and exit. Automatic identification and recording of distribution, inventory and other logistics information to improve the accuracy and efficiency of logistics management.

Production line process: Barcodes can be used for factory production line process management to improve production efficiency and quality. Barcodes can identify product numbers, batches, specifications, quantities, dates and other information to facilitate traceability during the production process. Inspection, statistics and other operations. Barcodes can also be integrated with other systems, such as ERP, MES, WMS, etc., to achieve automatic collection and transmission of data.

Some common barcode application areas

Ticket Verification: Cinemas, event venues, travel tickets and more use barcode scanners to verify tickets and the admission process.

Food Tracking: Some apps allow you to track the food you eat via barcodes.

Inventory Management: In retail stores and other places where inventory needs to be tracked, barcodes help record the quantity and location of items.

Convenient checkout: In supermarkets, shops and restaurants, barcodes can quickly calculate the price and total of goods.

Games: Some games use barcodes as interactive or creative elements, such as scanning different barcodes to generate characters or items.

Benefits of using barcodes

Speed: Barcodes can scan items in a store or track inventory in a warehouse faster, thus greatly improving the productivity of store and warehouse personnel. Barcode systems can ship and receive goods faster to reasonably way to store and locate items.

Accuracy: Barcodes reduce human error when entering or recording information, with an error rate of approximately 1 in 3 million, and enable real-time information access and automated data collection anytime, anywhere.

Cost Effectiveness: Barcodes are cheap to produce and print, and can save money by increasing efficiency and reducing losses. Barcoding systems allow organizations to accurately record the quantity of product left, its location and when reorders are needed, which This avoids waste and reduces the amount of money tied up in excess inventory, thereby improving cost efficiency.

Inventory Control: Barcodes help organizations track the quantity, location and status of goods throughout their life cycle, improve the efficiency of moving goods in and out of warehouses, and make ordering decisions based on more accurate inventory information.

Easy to use: Reduce employee training time because using the barcode system is easy and less error-prone. You only need to scan the barcode label attached to an item to access its database through the barcode system and obtain information related to the item. information.

Application of barcodes in inventory management

Goods Receipt: By scanning the barcode on received goods, the quantity, type and quality of goods can be quickly and accurately recorded and matched with purchase orders.

Shipping: By scanning the barcode on outgoing goods, the quantity, destination and status of the goods can be quickly and accurately recorded and matched with sales orders.

Moving warehouse: By scanning the barcodes on the goods and warehouse locations, the movement and storage of goods can be quickly and accurately recorded, and inventory information updated.

Inventory: By scanning the barcodes on goods in the warehouse, you can quickly and accurately check the actual quantity of goods and the system quantity, and find and resolve discrepancies.

Equipment Management: By scanning the barcode on the equipment or tool, you can quickly and accurately record the use, repair and return of the equipment or tool, and prevent loss or damage.

What is the difference between EAN-13 barcode and UPC-A barcode?

The EAN-13 barcode has one more country/region code than the UPC-A barcode. In fact, the UPC-A barcode can be regarded as a special case of the EAN-13 barcode, which is the EAN-13 barcode with the first digit set to 0.

The EAN-13 barcode is developed by the International Article Numbering Center and is universally accepted. The code length is 13 digits, and the first two digits represent the country or region code.

UPC-A barcode is produced by the United States Uniform Code Committee and is mainly used in the United States and Canada. The code length is 12 digits, and the first digit indicates the numeric system code.

EAN-13 barcode and UPC-A barcode have the same structure and verification method, and similar appearance.

EAN-13 barcode is a superset of UPC-A barcode and can be compatible with UPC-A barcode.

If I have a UPC code, do I still need to apply for an EAN?

No need. Both UPC and EAN can identify goods. Although the former originated in the United States, it is part of the global GS1 system, so if you register UPC under the GS1 organization, it can be used globally. If you need to print a 13-digit EAN barcode, you can add the number 0 in front of the UPC code.

UPC-A barcodes can be converted to EAN-13 barcodes by prepending 0. For example, the UPC-A barcode [012345678905] corresponds to the EAN-13 barcode [0012345678905]. Doing this ensures Compatibility with UPC-A barcodes.

About Code-128 barcode

Code-128 barcode was developed by COMPUTER IDENTICS in 1981. It is a variable-length, continuous alphanumeric barcode.

Code-128 barcode consists of a blank area, a start mark, a data area, a check character and a terminator. It has three subsets, namely A, B and C, which can represent different character sets. It can also be used to achieve multi-level encoding through the selection of starting characters, code set characters, and conversion characters.

It can encode all 128 ASCII characters, including numbers, letters, symbols and control characters, so it can represent all characters on the computer keyboard.

It can achieve high-density and efficient data representation through multi-level encoding, and can be used for automatic identification in any management system.

It is compatible with the EAN/UCC system and is used to represent the information of the storage and transportation unit or logistics unit of the commodity. In this case, it is called GS1-128.

Code-128 barcode standard was developed by Computer Identics Corporation [USA] in 1981. It can represent all 128 ASCII code characters and is suitable for convenient application on computers. The purpose of formulating this standard is to Improve barcode encoding efficiency and reliability.

Code128 is a high-density barcode. It uses three versions of character sets [A, B, C] and the selection of starting characters, code set characters, and conversion characters, according to different data Type and length, choose the most appropriate encoding method. This can reduce the length of the barcode and improve encoding efficiency. In addition, Code128 also uses check characters and terminators, which can increase the reliability of the barcode and prevent misreading or missed reading.

Code-128 barcode is widely used in internal management of enterprises, production processes, and logistics control systems. It has many application scenarios, mainly in industries such as transportation, logistics, clothing, food, pharmaceuticals, and medical equipment.

About EAN-13 barcode

EAN-13 is the abbreviation of European Article Number, a barcode protocol and standard used in supermarkets and other retail industries.

EAN-13 is established based on the UPC-A standard established by the United States. The EAN-13 barcode has one more country/region code than the UPC-A barcode in order to meet the needs of international applications. . The UPC-A barcode is a barcode symbol used to track goods in stores. It is only used in the United States and Canada. It was developed by the United States [Uniform Code Council] in 1973 and has been used since 1974. It It was the earliest barcode system used for product settlement in supermarkets.

EAN-13 consists of a prefix code, manufacturer identification code, product item code and check code, a total of 13 digits. Its encoding follows the principle of uniqueness and can ensure that it is not repeated worldwide.

EAN International, referred to as EAN, is a non-profit international organization founded in 1977 and headquartered in Brussels, Belgium. Its purpose is to formulate and improve globally unified commodities The barcode system provides value-added services to optimize enterprise supply chain management. Its member organizations are located around the world.

EAN-13 barcodes are mainly used in supermarkets and other retail industries.

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