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Section 1 Chapter 4

Nathan Shapero Computing A level Inglés 7 fichas

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1Input Devicespiece of hardware used to enter data into a computer/ similar processing device. Either automatic or manual
2Automatic Input Devices-barcode reader
-optical mark reader (OMR)
-optical character recognition (OCR)
-sensors
3Manual Input Devices-keyboard
-mouse
-microphone
-touchscreen
4Barcode readersthere are four different types:
-pen-type readers
-laser scanners
-CCD readers (in digital cameras)
-camera-based readers
5Radio Frequency Identification (RFID)uses both input and output, an input device to the read the signal from an RFID chip, and output to transmit a signal from an active tag. Used to identify and track everything from household products and cars to bank cards and animals.
6Active tagsActive tags r physically larger (include a battery to power the tag so it can actively transmit signals). Used to track things likely to be read from further away, e.g. cars
7Passive tagsmuch cheaper than active tags to produce as they have no battery. Relies on radio waves emitted from a reader up to a metre away to provide sufficient power to the card. Once energised, the transponder in the card can send its data to the reader nearby. Used from things like shopping

Descripción: A level (Section 1) Computing Fichas sobre Section 1 Chapter 4, creado por Nathan Shapero el 15/09/2022.
Creado por: Nathan Shapero
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