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

The Arithmetic Logical Unit (ALU) of the CPU performs the following types of calculations:
- Comparison: The ALU compares two values and determines whether one value is greater than, equal to, or less than the other value. In the given example, the ALU compares 56 and 78 and determines that 56 is not greater than 78.
- Addition: The ALU performs addition operations. In the given example, the ALU adds 60 and 40 to calculate the result of 100.
- Subtraction: The ALU performs subtraction operations. However, this operation is not mentioned in the given example.
- Multiplication: The ALU performs multiplication operations. However, this operation is not mentioned in the given example.
- Division: The ALU performs division operations. However, this operation is not mentioned in the given example.
- Logical Operations: The ALU performs logical operations such as AND, OR, and NOT. However, these operations are not mentioned in the given example.
The ALU is responsible for performing mathematical and logical calculations within the CPU. It takes input from the control unit and performs the necessary calculations to produce the desired output.

Applications software is any program, or group of programs used for performing
a certain type of work and designed for the end user.

Identifying the Jumbled Words

• ATEBLT - TABLET


• PTALMPO - LAPTOP


• HPALBET - LAPTOP

Category of the Words

The jumbled words "TABLET", "LAPTOP", and "LAPTOP" belong to the category of Hand-held computers.

Tablets and laptops are portable computing devices that can be carried and used easily. They are designed to be operated while being held in the hands or placed on a surface like a table or lap. These devices offer a range of functionalities similar to desktop computers but with the added advantage of mobility.

Therefore, the correct answer is D: Hand-held computers.

Answer: b
Identification:
The given description matches the features of a Central Processing Unit (CPU) or a logic chip. It is responsible for performing all the processing and calculations in a computer system.
Explanation:
- The description states that the component is an integrated circuit that contains all the functions of a CPU. This confirms that it is indeed a CPU.
- The component is also referred to as a logic chip, which further supports the identification as a CPU.
- The description mentions that the component is like an engine that starts working when the computer is turned on. This aligns with the role of a CPU, which initiates and manages the execution of instructions in a computer system.
Visual Identification:
The visual representation provided in option B matches the appearance of a typical CPU. It shows the integrated circuit with multiple pins and a heat sink.
Therefore, based on the identification and visual representation, the correct answer is option b.

Heading: Memory Unit in CPU
Key Points:
- The memory unit in the CPU is responsible for storing and retrieving data during the execution of calculations.
- It consists of registers, cache memory, and main memory.
- The outputs of the calculations, 60, 6, and 2, are temporarily stored in the memory unit before they can be used further.
- The memory unit provides fast access to data for the CPU.
Heading: Calculation Outputs Storage
Key Points:
- The outputs of the calculations, 60, 6, and 2, are stored in the memory unit of the CPU.
- The memory unit temporarily holds the results until they are needed for further calculations or operations.
- The memory unit ensures that the outputs are readily available for the CPU to access and use.
- The stored outputs can be retrieved and used by other components of the CPU or transferred to other storage devices if necessary.
Conclusion:
The outputs of the calculations, 60, 6, and 2, are stored in the memory unit of the CPU. The memory unit temporarily holds the results until they are needed for further calculations or operations. It provides fast access to data for the CPU and ensures that the outputs are readily available for use. Therefore, the correct answer is C: Memory Unit.

Professionals who make use of computers for designing purposes include:

1. Architects:

• Architects use computer software to create 2D and 3D designs of buildings.


• They can visualize and modify their designs easily using computer-aided design (CAD) software.


• They can also use computer simulations to analyze structural integrity and energy efficiency of their designs.

2. Book publishers:

• Book publishers use graphic design software to create book covers, layouts, and illustrations.


• They can manipulate images, fonts, and colors to achieve the desired visual effect.


• They can also use desktop publishing software to arrange text and images in a visually appealing way.

3. Engineers:

• Engineers use computer-aided design (CAD) software to create and analyze designs for various structures and systems.


• They can simulate and test their designs for performance, safety, and efficiency.


• They can also use computer simulations to optimize designs and identify potential issues before construction or manufacturing.

4. All of these:

• All the mentioned professionals, architects, book publishers, and engineers, make use of computers for designing purposes.


• Computers have become an integral part of the design process in these fields, allowing for more efficient and accurate design work.


• Computer-aided design tools have revolutionized the way designs are created, modified, and analyzed in these professions.

Therefore, the correct answer is D: All of these.

Task that cannot be performed on a smartphone:

• Reading a CD: Smartphones do not have CD drives, so you cannot directly read CDs on a smartphone. CDs are a physical medium, and smartphones are designed to access digital content.

Tasks that can be performed on a smartphone:

• Surfing the Internet: Smartphones have browsers that allow you to access the internet, browse websites, and search for information.


• Playing games: There are numerous game apps available for smartphones, offering a wide range of gaming experiences.


• Downloading music: You can download music directly to your smartphone from various sources such as music streaming platforms, online stores, or by transferring music files from your computer.

In conclusion, while smartphones have become versatile devices capable of performing a wide range of tasks, they are not equipped with CD drives, making it impossible to read CDs directly on a smartphone. However, there are alternative methods to access CD content, such as ripping the CD on a computer and transferring the digital files to the smartphone.

Peripheral devices connect with a computer through several I/O interfaces, such as communications (COM), Universal Serial Bus (USB) and serial ports. Printer, scanner and flash drives are the peripheral devices that are attached with a computer to provide some basic functionality.