All of the following are output devices, except -

Appeared in: UPPSC 2023

Explanation

A scanner is classified as an input device, not an output device.
Its primary function is to capture data from physical documents or objects and convert it into a digital format that is sent to the computer for processing.
The question asks for the exception in a list of output devices, making the scanner the correct answer as it performs the opposite function.

Option B: A monitor is a primary output device. Its function is to receive video signals from the computer and display them as visual information (text, images, video) for the user.
Option C: A speaker is an audio output device. It receives audio signals from the computer and converts them into sound waves that the user can hear.
Option D: A projector is a visual output device, similar to a monitor. It takes a video signal from a computer and projects the image onto a larger surface for group viewing.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Difference between computer input and output devices as background academic context rather than a clinical decision trigger.
Basic computer literacy is crucial in modern nursing for managing Electronic Health Records (EHRs), operating medical equipment, and using telehealth systems.
A nurse must know that to add a patient's signed consent form to their digital chart, they must use a scanner (input device) to digitize the document.
Understanding the function of each peripheral helps in effective communication with IT support when troubleshooting issues (e.g., 'The monitor is not displaying anything' vs. 'The scanner is not capturing the image').

How to Approach the Question

First, analyze the question's structure. The keyword 'except' is critical; it means you must find the option that does not fit the category.
The category is 'output devices'. Define this term: a device that presents data from the computer to the user.
Examine each option one by one. For each device, ask: 'Does this device send information to the computer, or does it present information from the computer?'
A monitor, speaker, and projector all present data received from the computer, so they are output devices.
A scanner sends data to the computer, making it an input device.
The scanner is the only device that is not an output device, making it the correct answer to this 'except' question.

Concept Tested & Keywords

Concept Tested: Difference between computer input and output devices
Stem keywords: output devices
Lead-in keywords: except
Negative lead-in flag: The question requires identifying the option that does not belong to the specified category (output devices).

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