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Hardware: input devices and their uses
Practice Questions

20 CIE IGCSE Computer Science questions on Hardware: input devices and their uses, each with instant feedback and a full examiner-style mark scheme.

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Question 1 · 1 mark · Difficulty 1/3

A supermarket uses a device at the checkout to read product barcodes. Which input device is most suitable for this purpose?

  1. Magnetic Ink Character Reader (MICR)
  2. Optical Character Reader (OCR)
  3. Barcode reader
  4. Optical Mark Reader (OMR)
Show answer & explanation
✓ Answer: CBarcode reader
A barcode reader uses laser light or a camera to scan the pattern of black and white bars that encode product data, making it the correct choice for reading barcodes at a supermarket checkout. OMR detects filled or shaded marks on forms such as multiple-choice answer sheets, not barcodes. MICR reads magnetic ink characters printed on bank cheques. OCR converts printed or handwritten text into digital characters, not barcode patterns.
Question 2 · 1 mark · Difficulty 1/3

A touchscreen on a smartphone registers a touch by detecting a change in electrical charge at the point of contact. Which type of touchscreen technology does this describe?

  1. Resistive touchscreen
  2. Infrared touchscreen
  3. Acoustic wave touchscreen
  4. Capacitive touchscreen
Show answer & explanation
✓ Answer: DCapacitive touchscreen
A capacitive touchscreen is coated with a material that stores electrical charge; when a finger touches the screen, it disturbs the electrostatic field and the position of the disruption is calculated, making C correct. A resistive touchscreen works by physical pressure causing two conductive layers to make contact. An infrared touchscreen uses a grid of IR beams whose interruption detects touch. An acoustic wave touchscreen uses ultrasonic waves that are disturbed by a touch.
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CIE IGCSE Computer Science: Hardware: input devices and their uses FAQ

How many CIE IGCSE Computer Science questions on Hardware: input devices and their uses are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Hardware: input devices and their uses for CIE IGCSE Computer Science, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Computer Science?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Hardware: input devices and their uses practice with other Computer Science topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Hardware: input devices and their uses questions aligned to the official CIE IGCSE Computer Science syllabus?
Every question is written against the published CIE IGCSE Computer Science specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is Hardware: input devices and their uses typically tested on CIE IGCSE Computer Science papers?
Hardware: input devices and their uses appears across multiple question types on real CIE IGCSE Computer Science papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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