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3.2. Input and output devices
A subsection of Computer Science, 2210, through 3. Hardware
Listing 10 of 39 questions
Four input devices, four descriptions and four applications are shown below. Draw a line to connect each input device to its correct description. Then connect each description to its correct application. Input device Description Application barcode reader copies paper documents and converts the text and pictures into a computer-readable form voice recognition microphone reads labels containing parallel dark and light lines using laser light or LEDs; the width of each line represents a binary code reading passports pH sensor detects changes in acidity levels; data is often in analogue form automatic stock control scanner device that allows audio signals to be converted into electric signals; these can be interpreted by a computer after being converted into digital form monitor soil in a greenhouse
2210_s15_qp_12
THEORY
2015
Paper 1, Variant 2
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Six descriptions and six devices are shown below. Draw a line to link each description to the correct device. Allows a user to write on a surface using a pen; text and drawings are then captured electronically and stored for later use. Interactive whiteboard Description Converts sound into an electrical signal/voltage. Uses thermal bubble and piezoelectric technology to produce a hard copy. Uses a bright white light source and micro mirrors (on a chip) to produce an image to be shone onto a wall or screen. Converts a hard copy document into an electronic form to be stored as a file on a computer. Uses negatively charged images on a rotating drum and positively charged toner to output a hard copy. Inkjet printer Digital Light Projector Laser printer Microphone Scanner (2D) Device
2210_s16_qp_12
THEORY
2016
Paper 1, Variant 2
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The diagram shows five output devices and five descriptions. Draw a line between each output device and its description. Output Device Description Inkjet printer Flat panel display that uses the light modulating properties of liquid crystals. LCD screen Flat panel display that uses an array of light‑emitting diodes as pixels. 2D cutter Droplets of ink are propelled onto paper. LED screen Electrically charged powdered ink is transferred onto paper. Laser printer High powered laser that uses the x-y plane. 
2210_s17_qp_12
THEORY
2017
Paper 1, Variant 2
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Alexandra has a new mobile device. It has a touch screen that uses capacitive technology. Describe how a capacitive touch screen registers Alexandra’s touch. Alexandra is wearing gloves because it is cold. She presses an icon on her touch screen but her action is not registered. Explain why the touch screen will not register her touch. Alexandra does not want to remove her gloves. Explain how Alexandra could use her mobile device whilst still wearing gloves.
2210_s18_qp_12
THEORY
2018
Paper 1, Variant 2
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Five descriptions of different input or output devices are given in the table. Complete the table by stating the name of each input or output device. Description Name of device This is an input device that works by shining a light onto the surface of a document. The light source is automatically moved across the document and the reflected light is captured by mirrors and lenses. This is an input device where a laser or a light source is moved across an object. The width, height and depth of the object are measured to allow a model to be created. This is a large input device that is usually fixed to a wall. A user can calibrate the device to make sure the sensors align with a projected image. The user can use either their finger or a special pen to make selections. This is an output device that uses many small mirrors to reflect light towards a lens. This will display an image. This is an output device that creates an object by building layer upon layer of material.
2210_s19_qp_11
THEORY
2019
Paper 1, Variant 1
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An image of a smartphone is shown. Identify one input device that is part of the smartphone. Identify two output devices that are part of the smartphone. All smartphones have a MAC address. State what is meant by the term MAC address. Describe the structure of a MAC address. A smartphone needs both RAM and ROM. State why a smartphone needs RAM and ROM. RAM ROM Modern smartphones can be secured with a biometric system that is built into the phone. Identify two biometric systems that would be suitable for securing a smartphone. Explain why modern smartphones are secured with a biometric system.
2210_s20_qp_11
THEORY
2020
Paper 1, Variant 1
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Questions Discovered
39