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Exam-style practice

Direct data entry and associated devices answer explanations

Review worked answers and explanations for Direct data entry and associated devices. Aligned to Cambridge IGCSE Information and Communication Technology.

Answer explanations

Question 1 of 2

Review the answer support, then move sideways through the set.

Paper 1 structured question: Direct data entry and associated devices

Paper 1Theory2 marks

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.

    [2]