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Computer Science · Oct / Nov 2021 · Paper 12 · Question 2

0478

As printed in the paper

The question as text

A train company wants to install a self-service ticket machine system for its train stations. When the customer has purchased their tickets, the machine will provide a paper ticket.

Read automatically from the paper; the printed page above is exact.

Show the answer and mark scheme

  • 2(a)[1]

    Any one from:

    Printer
    Speaker
    Light/LED
    Actuator

  • 2(b)[1]

    Any one from:

    Touchscreen
    Trackpad / touchpad
    Microphone
    QR code reader
    Barcode reader
    Magnetic strip reader
    RFID reader
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