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

Micro-computers are small computers designed for individual use. They include desktops, laptops, and other similar devices. Let's analyze the options:

1. Desktop computer: Used by individuals for various purposes like study, work, or entertainment.

2. Smartphone:  Smartphones are not classified as micro-computers.

3. Laptop: It performs similar functions to a desktop but is portable.

Therefore, Option D is the right answer.

Computers are used for fun things like playing songs, drawing pictures, and watching movies. But writing letters is not something we do for entertainment; it's for work or communication.
So, the correct answer is  Option C- Writing letters

The jumbled words can be rearranged as:

• A (PNUIT → UNIT): A part of the computer that helps it work.
• B (SRPCOES → PROCESS): Computers process data to give results.
• C (TENIRS → INSERT): We insert data or files in a computer.
• D (THOWR → THROW): This word is not used for computers.

Therefore, the word that is NOT related to computer is  Option D: THOWR.

• A (to prepare medical report of patients): This is done in hospitals, not in schools.
• B (to diagnose diseases): This happens in healthcare, not in schools.
• C (to keep records of students and teachers): Schools use computers for storing information about students and teachers.
• D (for scientific research only): Research is not the main purpose of computers in schools.

Therefore Right Answer is Option C.

The text shown on the monitor, such as names, ages, or marks, is called data because it is information that the computer stores and displays.

• The text is referred to as data.
• This is because it represents information stored and displayed by a computer.

Therefore, the correct answer is Option A.

The Control Unit manages and directs the movement of information between the memory, the ALU (Arithmetic Logic Unit), and other parts of the computer. It ensures all components function smoothly together.

• Responsible for coordinating operations.
• Ensures data flows correctly between components.
• Crucial for overall system performance.

Therefore, the right answer is Option B.

Devices like (i) a tablet, (ii) a smartphone, and (v) a USB cable can be directly connected to a computer using a USB port or USB cables. However, (iii) a processor and (iv) a motherboard are internal components that are not directly connected via USB.
Therefore, Correct Answer is Option B.

A: Speakers – These are used for sound output and have no connection to brightness.

B: Monitor – A screen where brightness is adjusted to make the display clear and visible.

C: Joystick – A device used for gaming, not related to brightness adjustments.

D: CPU – The brain of the computer, not associated with brightness.

Therefore, Option B is the right answer.

1: Desktop computer – It is a microcomputer but not portable.

2: Laptop – A portable microcomputer that can be carried easily.

3: Tablet – Also a portable microcomputer, designed for individual use.

Therefore, Option D (Both 2 and 3) is the right answer.

The given image shows the use of computer in military.

A: Press the Esc key – This is used to cancel or exit certain actions, but it doesn't de-select desktop icons.
B: Click on the empty area on the desktop – Clicking on an empty area clears the selection of any highlighted icon.
C: Wiggle the mouse – Moving the mouse alone does not de-select a highlighted icon.
D: Press the Ctrl key – This is used for selecting or deselecting multiple items but doesn't directly de-select all icons.

Therefore, Option B (click on the empty area on the desktop) is the right answer.

A: A small computer with a microprocessor – A microcomputer is a small computer designed for individual use, containing a microprocessor.
B: A computer used by scientists to research about micro-technology – This is incorrect, as microcomputers are not limited to scientific research.
C: A computer which is developed by merging two mainframe computers – This is incorrect because microcomputers are standalone systems.
D: A computer used for robotics – While computers can be used in robotics, this does not define a microcomputer.

Therefore, Option A (A small computer with a microprocessor) is the right answer.

A flash drive is a storage device that connects to a USB port on the CPU box.

• Used for transferring and storing data.
• Portable and easy to use.

The given device, an abacus, is a manual tool used for performing basic calculations like addition and subtraction.

The image shown in Option A correctly matches an LCD monitor, which is a flat-screen display commonly used with computers.