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  2. CueCat - Wikipedia

    en.wikipedia.org/wiki/CueCat

    CueCat barcode scanner and interposer cables with male and female PS/2 connectors. The CueCat, styled :CueCat with a leading colon, is a cat-shaped handheld barcode reader that was given away free to Internet users starting in 2000 by the now-defunct Digital Convergence Corporation (which often styled its own name as Digital:Convergence Corporation).

  3. Cyclic redundancy check - Wikipedia

    en.wikipedia.org/wiki/Cyclic_redundancy_check

    The advantage of choosing a primitive polynomial as the generator for a CRC code is that the resulting code has maximal total block length in the sense that all 1-bit errors within that block length have different remainders (also called syndromes) and therefore, since the remainder is a linear function of the block, the code can detect all 2 ...

  4. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    The standard 2D Code in South Korea. All 3 South Korean mobile carriers put the scanner program of this code into their handsets to access mobile internet, as a default embedded program. JAB Code: Just Another Bar Code is a colored 2D Code. Square or rectangle. License free MaxiCode: Used by United Parcel Service. Now public domain. mCode

  5. NODE (wireless sensor) - Wikipedia

    en.wikipedia.org/wiki/NODE_(wireless_sensor)

    The NODE+ has dimmable blue LEDs and two module ports contains a crypto chip on the firmware. It communicates with Bluetooth 2.1 or Bluetooth Low Energy. The lithium polymer battery in the device has a battery life of 12–14 hours with continuous Bluetooth use (54 days in standby mode) and can be charged through the micro-USB port. [22]

  6. Barcode reader - Wikipedia

    en.wikipedia.org/wiki/Barcode_reader

    Barcode reader. A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [ 1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals. Additionally, nearly all barcode readers contain ...

  7. Card reader - Wikipedia

    en.wikipedia.org/wiki/Card_reader

    A card reader is a data input device that reads data from a card-shaped storage medium and provides the data to a computer. Card readers can acquire data from a card via a number of methods, including: optical scanning of printed text or barcodes or holes on punched cards, electrical signals from connections made or interrupted by a card's punched holes or embedded circuitry, or electronic ...

  8. Image scanner - Wikipedia

    en.wikipedia.org/wiki/Image_scanner

    An image scanner —often abbreviated to just scanner —is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image. Commonly used in offices are variations of the desktop flatbed scanner where the document is placed on a glass window for scanning.

  9. USB - Wikipedia

    en.wikipedia.org/wiki/USB

    The eSATA connector is a more robust SATA connector, intended for connection to external hard drives and SSDs. eSATA's transfer rate (up to 6 Gbit/s) is similar to that of USB 3.0 (up to 5 Gbit/s) and USB 3.1 (up to 10 Gbit/s). A device connected by eSATA appears as an ordinary SATA device, giving both full performance and full compatibility ...