Barcode scanners or barcode readers are devices that can scan and interpret barcodes printed on labels and products. They use the same mechanism as flatbed scanners with a light source, a sensor and a lens. The sensor helps in translating optical images into electrical impulses, and nearly all barcode readers use decoder circuitry to interpret barcode data. Some of the different types of barcode readers include: Pen type barcode readers

>> Light Source Requirement in a Fiber Optic Communication System Light source plays a significant part in a fiber optic communication system. The basic optical fiber system consists of a transmitter, an optical fiber, and a receiver. The transmitter has a light source which is modulated by a suitable drive circuit in accordance with the signal to be transmitted. The choice of an optical source is determined by the particular

What is a fiber optic continuity tester? Fiber continuity tester is also called fiber optic continuity checker. It is the simplest visual test of a fiber optic cable link. To function properly, a fiber optic cable link must be “continuous”, meaning no breakage, either within the fiber cable or in the fiber connectors, should exist. The simplest and least expensive way to check is to inject some visual light into

Just like copper cables, NEC (National Electrical Code) requires indoor fiber optic cables be marked with their fire and smoking ratings. NEC requires all indoor fiber cables be marked correctly and installed properly for its intended use. According to NEC, a building’s inside area is divided into three types of sections: plenums, risers and general purpose areas. :: What is a Plenum area? A Plenum area is a building space

Looking for a business you can work from home that’ll make you $100,000/year or more? Learning to collect unclaimed tax sale overage funds may be for you. You’ve probably never heard of tax sale overage – and that’s why there is so much of it sitting around unclaimed by its rightful owners. Tax sale overage funds are created when a property is foreclosed on by the government for unpaid property

A wire map tester is a device that transmits signals through each wire in a copper twisted-pair cable to determine if it is connected to the correct pin at the other end. Wire mapping is the most basic test for twisted-pair cables because the eight separate wire connections involved in each cable run are a common source of installation errors. These testers detect transposed wires, opens (broken or unconnected wires),

The question whether to buy a Stand-Alone Scanner or go for an All in One printer raises many questions. Do you have space for a scanner and a printer? Is the scanning function and resolution as good with an All in One printer as with the Stand-Alone Scanner model? What about price, is the combined price of Scanner and Printer much more than an All in One. Lets look at

A Management Information System (MIS) is a precious technology that organizations use to measure the efficiency of their business operations as well as performance of their employees. The MIS endows with thorough insight of a company and supports management for making decisive business decisions. Though the MIS provides big number of advantages, but yet it also comes with a few limitations. In this article, we will be focusing on that

SPECIFICATION: Write a simple E-shop application using PHP and MySQL*. This may be a bookshop, music shop, clothes store, or anything else you wish. There should be a “user” interface to allow customers to select and purchase items (don’t worry about the payment side of things). Ideally there should also be a password-protected “owner” interface, to allow the E-shop operator to view/edit stock and pending orders. The exercise is deliberately

Traffic brokering is one of the ways you can use to make money online. In simple terms, it means you direct traffic from your promotional content straight to the affiliates’ sites or your own sites which display the affiliate providers’ products. Here you hope that the sales page is convincing and enticing enough to convert the prospect into a buyer. Although traffic brokering is not seen as ideal because it

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