Which of the following is NOT an output device?

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RRB NTPC - 2019

General Knowledge

Which of the following is NOT an output device?

This question was previously asked in

RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)

Monitor

Speaker

Scanner

Printer

The correct answer is

Scanner

Understanding Input vs. Output Devices

Computer hardware can be categorized based on its function: input or output. Input devices allow users to send data or commands to the computer. Output devices allow the computer to present information to the user.

Analyzing the Options

Let's examine each device listed:

Monitor: Displays visual information (images, text) from the computer. This is an output device.
Speaker: Produces audio output (sound) from the computer. This is an output device.
Scanner: Captures images or documents and converts them into digital data that is sent to the computer. This is an input device.
Printer: Creates a physical copy (hard copy) of digital information from the computer onto paper. This is an output device.

Identifying the Non-Output Device

Based on the analysis:

Monitor is an output device.
Speaker is an output device.
Scanner is an input device.
Printer is an output device.

Therefore, the device that is NOT an output device is the Scanner.

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