Peripherals

Classify these peripherals as input, output, or input-output (both at the same time): keyboard, monitor, printer, microphone, speakers, touchscreen, webcam. Justify each case with a short sentence.

The classroom projector shows the computer screen on the wall: is it an input or output peripheral? The classroom interactive whiteboard, besides displaying images, responds when you touch it with the pen: what about that one? Reason both answers.

Is the hard drive inside the computer tower a peripheral? What about an external hard drive connected via USB? Explain the criteria you use to distinguish an internal component from a peripheral.

Classify these peripherals as input, output, or input-output, and justify each case: a 3D printer, a scanner, a graphics tablet (without a screen, drawn on while looking at the monitor), a television used as a second computer screen, and a fingerprint scanner.

You can do it on paper and send a photo with your answer.

Which peripheral do you need in each situation? (a) you want to listen to music without disturbing anyone; (b) you want to transfer a paper photo to the computer; (c) you want to be heard on a video call; (d) you want to show your presentation on a large scale to the whole class. Explain what type each one is.

You make a video call to your grandparents from your computer. Name all the peripherals involved in the call, classify them as input, output, or input-output, and explain what you would notice in the conversation if each one failed.

The diagram shows a computer with several connected peripherals. The blue arrows carry information to the computer and the green ones carry it away; the touchscreen does not have an arrow yet, as shown in the figure.

State what type of peripheral each labelled device is (input or output) by looking at the direction of the arrows. Then decide which arrow or arrows the touchscreen, marked with '?', would need, and explain why.

The classroom printer prints documents but also scans photocopies and sends them to the computer. Explain why it is considered an input-output peripheral, just like a touchscreen, and look for two other devices at home that also combine input and output of information.

Lucas has severely reduced mobility in his arms and hands (he cannot press small keys or hold a conventional mouse) and also has low vision. At his high school, he has been assigned a standard computer with a traditional keyboard, an optical mouse, and a 21-inch monitor.

1. a) Analyze the accessibility problems of this workstation: identify what physical barrier Lucas encounters for data input and which one for information output.
2. b) Design an adapted workstation for him: select at least two alternative input peripherals and one alternative output peripheral that address his specific limitations, justifying how Lucas will interact with each of them without depending on another person's help.