Olympiad Test Level 2: Fundamentals of Computer - 1 - Class 3 MCQ

A joystick is an input device used to interact with the computer, mainly in video games. It allows users to control movement or actions by moving the stick. Printers and monitors are output devices because they display or produce results.

Output devices are responsible for showing the results of the computer's work. For example, a monitor displays text, images, or videos, while a printer produces a physical copy of a document. These devices help us see or hear the outcome of what we've done on the computer.

A scanner is used to capture the image or text from a physical document and convert it into a digital format on the computer. It works by scanning the document and creating an image that can be saved, edited, or printed.

Tablets are smaller, lightweight, and have touch screens, making them easy to carry around. Unlike desktop computers, which are larger and need peripherals like a mouse and keyboard, tablets let you interact with the device directly through touch.

Embedded computers are designed to perform specific tasks within larger systems. For example, the computer in a traffic light system controls the changing of lights based on timing or sensor input. These systems are often hidden inside everyday devices to make them work.

A server is a powerful computer that stores large amounts of data and manages it for other computers. When you access websites or use online services, your device connects to servers to retrieve information and send data.

A projector is the ideal device for displaying images or videos to a large audience during presentations. It projects the content from a computer onto a screen, making it visible to everyone in the room. Monitors are used for individual viewing, while printers and speakers are for different purposes.

Charles Babbage is known as the "father of the computer" for his design of the first mechanical computer, called the Analytical Engine. His ideas laid the foundation for modern computing, even though his machine was never fully built during his lifetime.

Mainframe computers are large and powerful systems used by big organizations like banks or government offices. They can process huge amounts of data at once, making them ideal for handling tasks like storing records or running large applications.

Smartphones are small and portable devices that fit in your pocket. They can perform many of the same tasks as a computer, like browsing the internet or playing games. However, they are much smaller than desktop computers and designed for portability.