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

The image of an abacus is represented by option A.
Explanation:
Abacus is a counting tool that is used for performing arithmetic calculations. It consists of a rectangular frame with rods or wires, on which beads are placed. The position of the beads on the rods represents different numerical values.
To identify the image of an abacus, we can analyze the options provided:
Option A:
- The image shows a rectangular frame with rods or wires.
- The rods have beads placed on them, which can be moved back and forth.
- The arrangement of the beads on the rods represents numerical values.
Option B:
- The image shows a set of colorful blocks arranged in a pattern.
- It does not resemble the structure of an abacus.
Option C:
- The image shows a collection of colored pencils.
- It does not resemble the structure of an abacus.
Option D:
- The option states "None of these," indicating that none of the provided images represent an abacus.
Therefore, the correct image of an abacus is represented by option A.

The working of Central Processing Unit (CPU) is compared with which of the following organs of human body?
Answer: B - Brain
Detailed
The Central Processing Unit (CPU) is the main component of a computer system that performs most of the processing inside the computer. It carries out instructions of a computer program by performing basic arithmetic, logical, control, and input/output (I/O) operations. The working of the CPU can be compared to the functioning of the human brain. Here's how:
1. Processing Power: Both the CPU and the brain are responsible for processing information and making decisions. They have the ability to interpret and execute instructions.
2. Control Unit: The CPU's control unit is like the brain's command center. It coordinates and manages the operations of other components in the computer, just like the brain controls the functions of the body.
3. Arithmetic and Logic Unit (ALU): The ALU in the CPU performs arithmetic and logical operations on data. Similarly, the brain processes and analyzes information, making logical connections and performing calculations.
4. Memory: The CPU uses cache memory to store frequently accessed data, similar to how the brain stores information in short-term memory. Both also have long-term memory storage capabilities.
5. Input and Output: The CPU interacts with input and output devices to receive and send data, just as the brain receives sensory information from the body and sends signals to control movements and actions.
6. Speed and Efficiency: The CPU performs calculations and processes data at incredible speeds, similar to the brain's ability to process information rapidly and efficiently.
In conclusion, the working of the CPU can be compared to the functioning of the brain due to their similar roles in processing information, making decisions, and controlling various operations.

The word "Abacus" is derived from the Latin word "Abax." The Latin word "Abax" refers to a flat-surfaced board with counters or calculations marked on it, which is similar to the concept of an Abacus. Therefore, option A, Latin language, is the correct answer.

The processing speed of first generation computers was measured in milliseconds.

First generation computers were developed in the late 1940s and early 1950s, and they used vacuum tube technology for processing data. The processing speed of these computers was relatively slow, and it was typically measured in milliseconds, which is one-thousandth of a second.

The computer conceived by Babbage is the Analytical Engine.
The correct answer is (A) Analytical Engine. The Analytical Engine was a design conceptualized by Charles Babbage in the 19th century. It was an early mechanical general-purpose computer that was designed to perform various arithmetic and logical operations.

Aakash has his class 3 marksheet hard copy. To send it in emai he has to follow these steps:
1. Scan the hard copy of marksheet
2. To send it in Email he need internet and intenet browser to attach the marksheet scanned copy and send it to school email Addredd

Screen resolution Monitor, Television, Mobile device or any display device is the number of pixels in x and y dimensions. The Screen resolution is generally measured as width x height in pixels. For example, resolution of monitor: 1920 x 1084 means the 1920 pixels is width and 1084 pixels is height of the screen.

The QWERTY keyboard layout was not invented by John Douglas. It was actually designed and patented by Christopher Sholes in 1878.

The correct answer is D) PC, CPU, MU, ALU.

CPU (Central Processing Unit) is known as the brain of the computer. It is responsible for executing instructions and performing calculations.
PC (Personal Computer) is a name for the computer, referring to a type of computer that is designed for personal use.
MU (Memory Unit) stores information temporarily or permanently as per our need. It includes both primary memory (RAM) and secondary memory (hard drive, SSD).
ALU (Arithmetic Logic Unit) is a component of the CPU that is responsible for performing logical and mathematical operations, such as addition, subtraction, comparison, and logical operations.
Therefore, option D correctly identifies the terms associated with the computer and its components.