MCQ Test: Input and Output Devices - 3 - Bank Exams MCQ

An input device is any hardware device that sends data to a computer, allowing you to interact with and control it. Examples of input devices include keyboards, mice, scanners, digital cameras, and joysticks.

The correct term for an input/output device on a computer reserved for communication between the computer operator or maintenance engineer and the computer is a "Console." The console typically consists of a keyboard and a display screen that allows the operator or engineer to interact with the computer system.

A keyboard is an input device, not an output device. Output devices are used to output the processed data from the computer. Examples include printers, monitors, speakers, and projectors.

A printer is a peripheral device that is used to produce hard copies or physical output of digital documents, images, or other data. The primary function of a printer is to print data onto paper or other printable materials. It takes digital information from a computer or another device and converts it into a physical form, such as text, graphics, or images.

Let's briefly go over the other options:

a) Input data: Printers do not typically serve as input devices. They receive data from other devices, such as computers, through various means like USB, network connections, or wireless communication.

b) Process data: Printers do not perform data processing functions. They rely on the data processing capabilities of the connected device, such as a computer or a mobile device.

c) Store data: Printers do not store data in a persistent manner. They may have temporary buffers to hold data temporarily before printing, but they are not designed for long-term data storage.

d) Display data: Printers do not have display capabilities. They do not show data visually; their purpose is to produce a physical output.

So, the primary function of a printer is to print data, making option e) the correct answer.

An output device is a peripheral device that is used to present or deliver information from a computer or another device to the user or to the external world. It provides an output in various forms, such as visual, auditory, or tactile. Let's review the other options to clarify why they are functions of an output device:

a) Display information: Displaying information is one of the primary functions of an output device. Examples of output devices that display information include monitors, screens, and displays.

b) Print information: Printing information is another function of an output device. Printers are specifically designed to convert digital data into physical copies, such as text, graphics, or images.

d) Project information: Projecting information onto a larger surface, such as a screen or wall, is also a function of an output device. Projectors are commonly used to display information for presentations or media viewing.

e) Output sound: Output devices that produce sound, such as speakers or headphones, are also considered output devices. They deliver auditory information to the user.

On the other hand, storing information is not a typical function of an output device. Storing data generally falls under the realm of storage devices, such as hard drives, solid-state drives (SSDs), or memory cards, which are designed specifically for data storage and retrieval.

Therefore, the correct answer is c) Store information.

A projector is an output device that is primarily used to display visual content such as images, videos, presentations, and other multimedia onto a large screen or surface. It projects the visual output onto a screen or wall using light and lenses, allowing viewers to see the content in a larger format.

A monitor, also known as a display screen or screen, is an output device that is used to visually present information generated by a computer or other electronic device. It receives signals from the computer's graphics card and displays the processed data, including text, images, videos, and graphical user interfaces (GUI), in a visual format that can be seen by the user. Monitors come in various sizes, resolutions, and technologies, such as LCD (liquid crystal display), LED (light-emitting diode), or OLED (organic light-emitting diode), and they are essential for interacting with and consuming information from a computer or other devices.

A barcode scanner, also known as a barcode reader or barcode scanner, is specifically designed to read barcodes. It uses a laser or image sensor to scan the barcode image and convert it into a digital format that can be interpreted by a computer or other systems. Barcode scanners are commonly used in various industries, such as retail, warehousing, logistics, and healthcare, to quickly and accurately capture information encoded in barcodes, such as product details, inventory numbers, or tracking numbers.

A touch screen is both an input and output device. It displays information (output) and allows the user to interact with the system by touching the screen (input).

A webcam is a video input device. It captures a live image or video and sends it to the computer to be displayed or stored.

A microphone is an input device that captures sound and converts it into digital data, which can be processed and stored by a computer or other audio devices.

A plotter is an output device that produces high-quality hard copies of digital documents, usually used for architectural and engineering drawings.

A fingerprint reader is an input device that scans and captures fingerprints for biometric authentication purposes, providing secure access to systems or data.

A webcam is a video input device that captures live video and audio, allowing users to participate in video conferencing or make video calls.

A magnetic card reader is specifically designed to read the magnetic stripes found on credit cards and other similar cards.

A mouse is an example of an optical input device as it uses optical sensors to detect movement and translate it into on-screen cursor movement.

A scanner is an input device that converts printed text and images into digital data, which can be stored and processed by a computer.

A touchscreen is a touch-sensitive input device that allows users to interact with a computer system by directly touching the display screen.

An output device is used to display or produce information from a computer system. A printer is a primary output device as it produces hard copies of documents and images.

An input device is used to enter data or instructions into a computer system. The keyboard is a common input device that allows users to input text and commands.