In the context of computing, which of the following is NOT an input device?

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RRB NTPC - 2019

General Knowledge

In the context of computing, which of the following is NOT an input device?

This question was previously asked in

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

Projector

Barcode reader

Scanner

Mouse

The correct answer is

Projector

Input Devices Explained

Input devices are hardware components that allow users to send data or commands to a computer system. Examples include keyboards, mice, scanners, and microphones.

Analyzing Device Functions

Barcode reader: Captures barcode information and sends it to the computer. This is an input device.
Scanner: Converts physical documents or images into digital data sent to the computer. This is an input device.
Mouse: Translates physical movement into cursor movement and clicks, sending signals to the computer. This is an input device.
Projector: Receives data (images/video) from the computer and displays it visually. This is an output device.

Identifying the Non-Input Device

The question asks for the device that is NOT an input device. Based on the function analysis, the Projector is the only device listed that receives data from the computer for display, making it an output device.

Therefore, the Projector is NOT an input device.

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