Test: Parts of a Computer - Class 1 MCQ

Speakers function to convert digital audio signals from a computer into audible sound, allowing users to hear music, alerts, and other audio outputs. This makes them essential for multimedia experiences.

A scanner reads text and images from physical documents and converts them into digital files that can be stored and manipulated on a computer. This process helps in digitizing paper-based information for easier access and sharing.

The keyboard is the main input device used to enter text, numbers, and commands into a computer. Each key corresponds to a specific character or function, allowing users to interact with the computer efficiently.

An Uninterruptible Power Supply (UPS) provides backup power to a computer during electrical outages, ensuring that the system remains operational long enough to save work and safely shut down, thus preventing data loss.

A keyboard is made up of many buttons, known as keys, which are used for typing letters, numbers, and executing commands on a computer. Each key corresponds to a specific function, facilitating user interaction.

The first mouse was invented by Douglas Engelbart, and it significantly impacted how users interact with computers. The invention allowed for more intuitive navigation within graphical user interfaces.

The monitor is often compared to a television screen as it displays the visual output from the computer, including graphics, text, and videos, enabling users to view their work and entertainment.

A mouse is a pointing device that allows users to navigate the graphical user interface of a computer by moving a pointer on the screen. It simplifies the process of selecting and manipulating objects, making it easier to use software applications.

A microphone is used to record sound, including voice, allowing for audio communication through computers. It converts sound waves into electrical signals, which can be processed and stored.

The Central Processing Unit (CPU) is often referred to as the brain of the computer, as it is responsible for managing and controlling all other components within the system. It processes instructions and performs calculations necessary for tasks, making it essential for the computer's operation.

The monitor functions as the screen that displays visual output from the computer, showing everything from documents to videos. It allows users to see what they are working on and interact with the system visually.

A printer is specifically designed to produce hard copies of digital documents, allowing users to have printed versions of their work for distribution, filing, or personal use.

Speakers are audio output devices that convert digital audio signals from a computer into sound, allowing users to listen to music, sounds, and other audio content produced by the computer.

A hard copy refers to a physical printed document that is produced by a printer. It contrasts with digital files, which exist in electronic form and can be viewed on screens without being printed.

A printer is a peripheral device that produces a physical copy of digital documents and images by transferring text and graphics onto paper, known as a printout or hard copy. This allows users to have tangible records of their digital work.

A router is not a main part of a computer; it is a networking device that forwards data packets between computer networks. The main parts of a computer include the monitor, CPU, keyboard, and mouse.

Headphones are designed for private listening, allowing users to hear audio without disturbing others around them. They provide a personal audio experience compared to speakers, which project sound into the surrounding environment.

A scanner is a device that captures images and text from physical documents and converts them into digital format, allowing users to store, edit, and share the content electronically. This capability is particularly useful for digitizing records and photographs.

The Central Processing Unit (CPU) is referred to as the brain of the computer because it processes information and directs the operations of other components. It executes instructions and manages tasks, making it a critical component of computer functionality.

Mobile phones can have keyboards similar to those found on computers. Many mobile devices feature keypads or virtual keyboards that allow users to type messages and interact with applications just like on a traditional keyboard.