Direct Data Entry And Associated Devices
Muhtasari
Tap a card on a reader and the bus lets you on; wave a phone over a square pattern and a website opens; an exam board feeds ten thousand answer sheets through a machine and the results appear in minutes. None of this involves anyone typing. This is direct data entry, where a device captures data automatically with little or no human effort, faster and more accurately than a keyboard ever could.
In this lesson you will meet the direct data entry devices the Cambridge syllabus requires: magnetic stripe readers, chip and PIN readers, RFID readers, optical mark recognition, optical character recognition, barcode readers and QR code scanners. You will learn how each one captures data, where it is used, and how to weigh its advantages and disadvantages so you can pick the right one for a given system.
Malengo
- Direct data entry.
- Characteristics, uses, advantages and disadvantages of direct data entry devices including: magnetic stripe reader, chip and PIN reader, Radio Frequency Identification (RFID) reader, Optical Mark Recognition/Reader (OMR), Optical Character Recognition/Reader (OCR), bar code reader, QR scanner.
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Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Which device reads data from a tag using radio waves and needs no line of sight? A. Barcode reader B. RFID reader C. OMR D. Magnetic stripe reader Answer: B
- An examination board needs to read multiple-choice answer sheets where candidates shade boxes. The most suitable device is: A. OCR B. Scanner C. OMR D. QR scanner Answer: C
- Which technology converts a printed document into editable text? A. OMR B. OCR C. Magnetic stripe reader D. Chip and PIN reader Answer: B
- Compared with a barcode, a QR code can: A. Hold less data B. Only be read by a laser scanner C. Hold much more data and be read by a camera D. Never be encrypted Answer: C
- Which is the most secure way of paying with a card in a shop? A. Magnetic stripe B. Chip and PIN C. Barcode D. OMR Answer: B
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