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

Computers are useful devices that can perform various tasks, including:

• Watching movies - You can enjoy films and videos.
• Solving sums - They assist with calculations and math problems.
• Playing games - You can engage in various games for entertainment.

However, it is important to note that:

• You cannot cook food with a computer.

While computers support many activities, cooking is not one of their capabilities.

Computers understand instructions as electronic signals, not mechanical ones. They use these electronic signals to process information and follow commands.

A device is a tool or equipment designed to perform a specific function, ranging from simple items like a hammer to complex electronics like smartphones.

The keyboard is an input device used for entering data into the computer by typing letters, numbers, and symbols.

A projector is an output device used to project an image onto a surface, often used during presentations to display content to a larger audience.

A laptop computer is a portable device that includes a screen and a keyboard, making it easy to carry and use anywhere.

Computers are used in hospitals for various essential tasks:

• Doctors use computers to write prescriptions.
• They assist with ultrasound scanners for diagnosing diseases.
• GPS technology helps in tracking emergency locations.

Overall, computers play a crucial role in enhancing hospital operations and patient care.

A server is a powerful computer that stores and manages large amounts of information, enabling communication and data sharing across the internet.

Embedded computers are small computers embedded inside machines and gadgets to help them function. A traffic light uses an embedded computer to control its operation.

Charles Babbage is considered one of the first computer builders, known for his work on the design of an early mechanical computer.