Learning objective

Recognize the definition of an input device and its necessity. Examples include barcode scanners, digital cameras, keyboards, microphones, optical mice, QR code scanners, touch screens (resistive, capacitive, and infra-red), and both two-dimensional (2D) and three-dimensional (3D) scanners.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE Computer ScienceSubject content

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Quick explanation

This point belongs to Input and output devices, especially Input and output devices outcomes.
You need to be able to recognize the definition of an input device and its necessity. Examples include barcode scanners, digital cameras, keyboards, microphones, optical mice, QR code scanners, touch screens (resistive, capacitive, and infra-red), and both two-dimensional (2D) and three-dimensional (3D) scanners.
The key ideas to know are Define, Explain, and Identify.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DefineExplainIdentify

Why it matters

This objective helps connect Input and output devices outcomes to exam-style questions, flashcards, and revision notes for Input and output devices.

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Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 1Computer Systems1 marks

Description

Input devices are hardware components that allow users to enter data into a computer system. Examples include keyboards, mice, and scanners.

a
State two examples of input devices.
Your answer
Aim for approximately 1 distinct marking point.
[1]

Revision notestopic notes

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