Flashcards
Section 1 Chapter 4
Cards in this deck (7)
- 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
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- A level Computing (Section 1) Flashcards on Section 1 Chapter 4, created by Nathan Shapero on 15/09/2022.
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- Nathan Shapero
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