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

The image in Option A shows an Abacus, which is a traditional calculating tool used for arithmetic calculations. It consists of beads that can be moved along rods, helping in manual counting and calculations.
The other images represent different mechanical devices:

Option B shows a device that looks like a camera or a similar object, which is not related to an abacus.

Option C shows a Curta calculator, a mechanical calculating device, but not an abacus.

Thus, the correct answer is Option A because it shows an Abacus.

The Central Processing Unit (CPU) of a computer is often compared to the brain of the human body. Just as the brain processes information, makes decisions, and controls the body's actions, the CPU processes instructions, controls operations, and performs computations within a computer. The other organs listed (heart, eye, and ear) do not perform the same role of processing information as the brain does.

The word Abacus is derived from the Greek word "Abax," which means a flat surface or board used for counting or calculations. The Abacus was one of the earliest devices used for arithmetic, and this historical connection is important in understanding the evolution of computing tools. Therefore, option A, Greek Language, is the correct answer.

The processing speed of first-generation computers was measured in microseconds. These computers, built using vacuum tubes, were much slower compared to modern computers. Over time, advancements in technology have significantly improved processing speeds, reducing the time required for computations to nanoseconds and even picoseconds in more recent generations of computers.

• (A) Your computer always gives accurate results. → (3) Reliable
• (B) Your computer can perform a number of tasks. → (4) Versatile
• (C) Your computer can store a lot of data which can be used later conveniently. → (1) Memory
• (D) Your computer can complete millions of tasks in a second. → (2) Speed

The computer conceived by Charles Babbage was the Analytical Engine. It was a mechanical, general-purpose computing device designed in the 1830s, and it is considered the first concept of a programmable computer.
The Arithmetic Machine (Option B) was another of Babbage's inventions, but the Analytical Engine was the more advanced and significant one in the history of computing.
Donald Knuth (Option C) is a well-known computer scientist, not a computer invented by Babbage.

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 invented by Christopher Latham Sholes, not John Douglas. He developed it in the 1870s for the Sholes and Glidden typewriter, which became the first commercially successful typewriter.

The other statements are correct:

Option A: The background picture of the desktop is indeed called wallpaper.

Option B: A computer virus can damage or destroy information on a computer.

Option C: The title bar displays the name of the active program or document.

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.