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    Tuesday, January 18, 2011

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    Ergonomic Keyboard

    A keyboard that separates the keys into two halves shaped like a wide "V" is known as an ergonomic keyboard. While others are movable, some keyboards have a fixed layout. It puts less stress on the hands and wrist and winds up being comfortable for most people.


     


    Ink-jet Printer

    They are high-speed computer-driven printer that sprays a row of fine streams of ink onto labels and/or forms to create a dot pattern print image. Continuous lines can be formed by the appearance of small and dense dots. Ink-jet printers have several advantages over impact printers, such as speed, dual addressing, and personalization. Unfortunately, they are not able to supply the greater personalization, image orientation, and type-font flexibility of laser printers.






    Laser Printer

    A printer that uses a laser and the electrophotographic method to print a full page at a time. The laser "paints" a charged drum with light, to which toner is applied and then transferred onto paper. Desktop laser printers which is similar to copy machines, use cut sheets. Meanwhile, large printers may use paper rolls that are cut after printing.



    Magnetic-ink character reader (MICR)

    Magnetic Ink Character Recognition, or MICR, is a character recognition technology used primarily by the banking industry to facilitate the processing of cheques. The technology allows computers to read information (such as account numbers) off of printed documents. However, MICR codes can be easily read by humans unlike barcodes.



    Optical-character recognition (OCR)

    It is basically a scanning and comparison technique intended to identify printed text or numerical data. OCR software attempts to identify characters by comparing shapes to those stored in the software library. The software tries to identify words using character proximity and will try to reconstruct the original page layout. High accuracy can be obtained by using sharp, clear scans of high-quality originals. The down side is, the accuracy decreases as the quality of the original declines.


     



    Optical-mark recognition (OMR)

    Many traditional OMR (Optical Mark Recognition) devices work with a dedicated scanner device that shines a beam of light onto the form paper. To detect the marked areas, the contrasting reflectivity at predetermined positions on a page is then utilized because they reflect less light than the blank areas of the paper.



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