- Q: How many data items can a barcode contain?
- Although the 2-D code can be used to encode many characters, if necessary, the length can be changed to encode fewer characters. The amount of data in a variable-length barcode is limited by the number of symbols. The number of these depends on the capability of the barcode reader.
For example: The standard U.P.C./EAN symbol can be used to encode a 14-digit number. Many barcodes for warehouses, logistics, manufacturing and storage control require a series of numbers with similar lengths of digits, so many commonly used systems can easily encode concise symbols.
- Q: Which type of barcode should I use?
- The wide variety of barcodes allows you to find a suitable system to meet your requirements. If you want to make sure which barcode type is the most suitable for you, the key criteria are the amount of data to be encoded, the space available to print the barcodes and the data type to be encoded.
- Q: How many barcode types are available now?
- Nowadays, there are hundreds of available barcode symbol systems. However, only a few are widely used. Each of these ‘symbologies’ has unique barcode patterns, spacing modes, and data encoding rules. There are two basic types of barcodes: 1-D and 2-D barcodes.
1) A 1-D barcode is a one-dimensional line-type code with the data arranged in bars with spaces between them. The U.P.C./EAN symbol system is a typical 1-D barcode.
2) 2-D barcodes use another dimension to encode the data. There are two main types of 2-D barcodes: Stack and matrix type symbol systems. The stack type consists of many one dimensional symbols stacked over each other. The matrix type consists of blocks or lines formed by squares and geometric patterns. In addition, there are also hybrid type 2-D symbol systems and other variations.
- Q: What are the applications of barcodes?
- Barcodes are mainly used for saving human resources. In this respect the article barcode system promoted by IANA (International Article Numbering Association) has been widely adopted by advanced enterprises in many countries. Barcodes are used by retailers on food packages, meat, household articles, agricultural products, medicines, in the chemical and electronic industries, in logistics, etc.
The main applications are product barcodes and distribution barcodes, such as:
(1) Manufacture/Supplier: For manufacturers the main objective is efficiency and competitiveness: production yield control, the management of raw materials, production process arrangement, final product storage and distribution, etc. Barcodes make each product easily traceable from manufacturing to transportation and delivery.
(2) In the Transportation Industry the main goals are shortening product delivery times, controlling product flow, and providing customers with information so as to keep proper control of the product receipt and delivery processes.
(3) Logistics and Distribution Centers use new features such as effective distribution and logistics systems, effective market development, market information, customer services, etc.
(4) Retailers and Hypermarkets use barcode scanners to reduce the effects of human error and improve efficiency.
??Product Barcodes: In the manufacturing and sales markets, barcodes can be used in consumer units and distribution and supply units. Also, depending on the situation and system used, barcodes can either be a backup in the practical logistics and information exchange process, or they can be the only method used.
??Distribution Barcodes: The main applications in distribution is the reading of identification symbols on barcodes during their shipping, loading, unloading, warehouse storage, transportation, etc.
- Q: Why is an industrial PDA bigger than a commercially available PDA?
The design of a commercially available PDA is mainly targeted for personal organization or multimedia entertainment. This means light weight, small size and a fancy look are the major concerns. The industrial PDA is mainly designed for use in the enterprise environment, and here the major concerns are rigidity, durability, dust and water resistance, long battery life, simple data input, etc. To meet these special requirements, the industrial PDA typically needs more space to accommodate this protection and is bigger.
Recently, as a result of ongoing progress and innovation in R&D and manufacturing capability, the dimensions of the industrial PDA have become smaller. Unitech leads way in the development of the lightest and most compact PA500 and PA600 industrial PDAs. They are small and light (<300g) and fully equipped for all industrial purposes. They are the best choice for enterprises moving into mobilized business operations.