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3.2. Input and output devices
A subsection of Computer Science, 0478, through 3. Hardware
Listing 10 of 64 questions
Name a suitable output device for each of the following applications. A different device should be used for each application. Application Suitable output device Production of one-off photographs of very good quality High volume colour printing of advertising flyers Production of an object, which is built up layer by layer; used in CAD applications Converting electrical signals into sound Showing enlarged computer output on a wall or large screen
0478_w15_qp_13
THEORY
2015
Paper 1, Variant 3
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Two examples of output devices are a 3D printer and a 3D cutter. The table contains four statements about 3D printers and 3D cutters. Tick () to show which statements apply to each output device, some statements may apply to both output devices. Statement 3D printer () 3D cutter () Outputs a physical 3D product Uses a high powered laser to create the output Creates 3D prototypes Uses layers of material to create the output Identify the software used to create the computerised designs for 3D printing. A Digital Light Projector (DLP) is another example of an output device. Describe how a DLP displays an image.
0478_w18_qp_11
THEORY
2018
Paper 1, Variant 1
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Karina is taking her Computer Science examination. She has three questions to answer about output devices. For the first question she writes the answer: “It is a high powered laser that cuts materials such as thin metals or wood.” Identify the output device that Karina is describing. For the second question she writes the answer: “The screen is made up of blocks of red, green and blue pixels. The screen uses layers of different types of liquid.” Identify the output device that Karina is describing. For the third question she writes the answer: “It is responsible for powering and moving a motor in machinery, such as a robot arm in a factory.” Identify the output device that Karina is describing. Karina correctly answers another examination question about some more output devices. Five different terms have been removed from her answer. Complete the sentences in Karina’s answer, using the list given. Not all terms in the list need to be used. • 3D • digital light projector • inkjet • interactive whiteboard • laser • rotating • scanning • sliding • speaker • thermal bubble An allows a user to write on a surface using a pen, the text and drawings can then be captured and stored for later use. An printer produces a hard copy of a document using and piezoelectric technology. A printer uses a drum, and positive and negative charges, to produce a hard copy of a document.
0478_w18_qp_12
THEORY
2018
Paper 1, Variant 2
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There are six output devices and six descriptions shown. Draw a line to connect each output device to the most appropriate description. Uses a high-intensity beam of light shone through three layers of changing pixels Laser Printer Description Device Uses millions of micro mirrors to reflect light through a lens Uses plastic, resin or powdered metal to generate a physical output Uses a static electric charge on a rotating drum to generate a physical output Uses liquid ink to generate a physical output Uses a high-power laser to generate a physical output LCD Projector Digital Light Projector (DLP) Inkjet Printer 3D Printer 2D Cutter
0478_w18_qp_13
THEORY
2018
Paper 1, Variant 3
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A zoo has an information point. • Visitors use a menu to select information about animals. • The menu includes 500 different animals. • The information is provided only using high definition video with an audio track. State one input device that could be used for the information point. The output is shown on a monitor. State one other output device that could be used for the information point. The video files are stored at the information point. State one secondary storage device that could be used. The zoo decides to introduce Quick Response codes in different places in the zoo. These provide further information about the animals. Describe how customers obtain the information from the Quick Response codes.
0478_w19_qp_11
THEORY
2019
Paper 1, Variant 1
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Magda has a mobile telephone. She uses the touch screen on her telephone to send emails to her customers. The touch screen breaks, stopping Magda from using it to type her emails. Identify one other input device that would be built into the mobile telephone that Magda could use to send an email to her customers. The touch screen operates by using the conductive properties of the object that is used to touch the screen. State whether the touch screen is a resistive, capacitive or infra-red touch screen. Magda is listening to music on her mobile telephone when she receives a telephone call. A signal is sent within the telephone to stop the music and output that a call has been received. Give the name of this type of signal.
0478_w21_qp_11
THEORY
2021
Paper 1, Variant 1
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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. One output device that is used in the ticket machine is a display screen. Identify one other output device that is used in the ticket machine system. The train company does not want users to use a keyboard or a mouse to enter their data, when buying a ticket. The company is worried that they may be stolen or get too dirty. Identify one other input device that would be suitable for use in the ticket machine system, to allow users to enter their data.
0478_w21_qp_12
THEORY
2021
Paper 1, Variant 2
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Questions Discovered
64