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Cambridge IGCSE Information and Communication Technology practice

Paper 1 structured question: Direct data entry and associated devices

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Attempt questionDirect data entry and associated devices revisionRevise the key idea

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Direct data entry and associated devices

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Paper 1Theory2 marks

Direct data entry devices are used in many industries to speed up data input and reduce errors.

Description

Direct Data Entry Devices

A supermarket uses barcode readers at checkout to scan product codes. A bank uses chip and PIN readers for card payments. An examination board uses OMR to mark multiple-choice answer sheets.

  1. a

    Describe the benefits of using barcode readers in supermarkets.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 1 structured question: Direct data entry and associated devices

Paper 1Theory2 marks

Data Table

Features of Direct Data Entry Devices

The table shows some devices, their applications, and drawbacks.

DeviceApplicationDrawback
Magnetic stripe readerReading card data for paymentsCan be damaged easily
RFID readerInventory tracking without line of sightMore expensive than barcode readers
OMRMarking multiple-choice examsOnly detects marked areas
  1. a

    Explain one drawback of using magnetic stripe readers.

    Aim for approximately 2 distinct marking points.

    [2]