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Test: Introduction To Computers- 1 - Class 5 MCQ


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Test: Introduction To Computers- 1 - Question 1

The output given by the computer after processing is called______.

Detailed Solution for Test: Introduction To Computers- 1 - Question 1
The output given by the computer after processing is called information.
Explanation:
- After processing the input, a computer produces output, which is the result of the processed data.
- The output can be in various forms such as text, images, sounds, or any other media.
- The output provides meaningful and useful information to the user or system.
- It is the final result of the computer's processing and can be used for further analysis or decision making.
- The output can be displayed on a screen, printed on paper, or saved in a file.
- It is essential for the output to be accurate, relevant, and understandable to fulfill its purpose.
- The output is typically generated based on the instructions given to the computer and the data it has processed.
- It helps in conveying the processed data in a usable format to the user or other systems.
Overall, the output of a computer system is called information as it provides meaningful and usable results after processing the input data.
Test: Introduction To Computers- 1 - Question 2

Calculations and data comparison such as "If  AB then C=A+B " which the CPU performs is called ___.

Detailed Solution for Test: Introduction To Computers- 1 - Question 2
Processing
- Processing refers to the calculations and data comparison performed by the CPU.
- It is one of the core functions of a computer system.
- Processing involves manipulating and transforming data to produce a desired output.
- The CPU executes instructions and performs operations on data stored in memory.
- It involves various operations such as arithmetic calculations, logical comparisons, and data transformations.
- Processing is essential for tasks such as data analysis, simulation, and problem-solving.
- It enables the computer to perform complex tasks and make decisions based on input data.
- Processing can involve single or multiple steps, depending on the complexity of the task.
- The CPU processes data by fetching instructions, decoding them, executing them, and then storing the results.
- Processing speed and efficiency are important factors in determining the performance of a computer system.
Test: Introduction To Computers- 1 - Question 3

 1) Which of the following statements is true?

Detailed Solution for Test: Introduction To Computers- 1 - Question 3
Answer:
The correct statement is D: A computer is a versatile machine which calculates at high speed.
Here is a detailed explanation:
A computer can only store the information:
- This statement is not true because computers are not limited to just storing information. They are capable of performing various tasks, including calculations, data processing, communication, and more.
A computer is known for high-speed calculation and it can only calculate:
- This statement is also not true. While computers are indeed known for their high-speed calculation capabilities, they are not limited to just calculations. They can perform a wide range of tasks, including storage, processing, communication, multimedia, and more.
A computer is not at all a reliable machine:
- This statement is not true. Computers are designed to be reliable machines. They undergo rigorous testing and quality control processes to ensure their reliability. They are built with redundant components, error correction mechanisms, and backup systems to minimize the risk of failure.
A computer is a versatile machine which calculates at high speed:
- This statement is true. Computers are versatile machines that can perform a wide range of tasks, including calculations, data processing, communication, multimedia, and more. They are designed to process information at high speeds, making them efficient in handling complex tasks and large datasets.
In conclusion, the correct statement is D: A computer is a versatile machine which calculates at high speed.
Test: Introduction To Computers- 1 - Question 4

Which of these is most essential for a computer to perform a required task?

Detailed Solution for Test: Introduction To Computers- 1 - Question 4
Answer:
To perform a required task, a computer requires several components and instructions. Among the given options, the most essential component for a computer to perform a required task is user instructions. Here's a detailed explanation:
User Instructions:
- User instructions are the commands or guidelines provided by the user to the computer to perform a specific task.
- These instructions can be in the form of input through various input devices or software applications.
- User instructions guide the computer on what actions to take and how to process the data.
- Without user instructions, the computer would not know what task it needs to perform or how to go about it.
Other options mentioned in the question are not as essential for a computer to perform a required task:
Monitor:
- A monitor is an output device that displays the visual output of the computer.
- While a monitor is necessary for visual interaction with the computer, it is not essential for the computer to perform a task. The computer can still process data and perform tasks without a monitor.
Keyboard:
- A keyboard is an input device that allows the user to enter data and commands into the computer.
- While a keyboard is essential for providing user instructions, it is not the most essential component. User instructions can also be given through other input devices or software applications.
Printer:
- A printer is an output device that produces a hard copy of the computer's output.
- While a printer may be required to obtain a physical copy of the output, it is not essential for the computer to perform a required task. The computer can still process and perform tasks without a printer.
In conclusion, user instructions are the most essential component for a computer to perform a required task. Without user instructions, the computer would not know what actions to take or how to process the data. Other components like the monitor, keyboard, and printer are important but not as essential for the basic functioning of the computer.
Test: Introduction To Computers- 1 - Question 5

1) Computers can perform calculations at the speed of

Detailed Solution for Test: Introduction To Computers- 1 - Question 5
Computers can perform calculations at the speed of million instructions per second.
Computers have the ability to process instructions at incredibly high speeds. The unit used to measure this speed is the instruction per second (IPS).
Here are the options provided and their corresponding speeds:
A: one instruction per second.
- This option suggests that computers can only perform one instruction in a second, which is incorrect. Computers are capable of much faster speeds than this.
B: hundred instructions per second.
- This option suggests a slightly faster speed than option A, but it is still significantly slower than the actual speed of computers.
C: million instructions per second.
- This option accurately describes the speed of computers. Computers can process millions of instructions in a single second, allowing for rapid calculations and data processing.
D: twenty thousand instructions per second.
- This option suggests a speed that is much lower than the actual speed of computers. Computers are capable of processing instructions at a much greater rate.
In conclusion, the correct answer is C: million instructions per second. Computers can perform calculations at incredibly fast speeds, allowing for efficient data processing and computation.
Test: Introduction To Computers- 1 - Question 6

In railway stations computers are used for booking ___and printing ___.

Detailed Solution for Test: Introduction To Computers- 1 - Question 6

In railway stations, computers are used for booking tickets and printing seat reservations. Here is a detailed explanation:
- Booking Tickets:
- Railway stations have computerized ticket booking systems that allow passengers to book tickets for their desired train journeys.
- These computer systems are connected to the central reservation system, which stores information about train schedules, seat availability, and fares.
- Passengers can provide their travel details, such as the destination, date, and class of travel, to the computer system.
- The computer system then searches the reservation database and provides available options for ticket booking.
- Passengers can select their preferred train and seats, and the computer system generates a ticket with the necessary details.
- Printing Seat Reservations:
- After booking a ticket, passengers may also need to reserve specific seats on the train.
- Computers are used to allocate and reserve seats based on passenger preferences, such as window seats or aisle seats.
- Once the seat reservations are finalized, the computer system generates a seat reservation slip or ticket, which includes the passenger's name, seat number, and train details.
- Passengers can collect these printed seat reservation slips from the railway station's ticket counter or self-service kiosks.
To summarize, computers in railway stations are essential for the efficient processing of ticket bookings and printing seat reservations. They provide a convenient and centralized system for passengers to plan and secure their train travel.
Test: Introduction To Computers- 1 - Question 7

In schools computers are used for

Detailed Solution for Test: Introduction To Computers- 1 - Question 7
In schools, computers are used for:
- Interactive education: Computers are extensively used in schools for interactive learning. They provide students with access to various educational resources, interactive tutorials, and multimedia presentations, enhancing their understanding and engagement with the subject matter.
- Research and information gathering: Computers enable students to access a vast amount of information from the internet, facilitating research and information gathering for projects, assignments, and presentations. They can explore multiple sources, compare data, and analyze information more efficiently.
- Collaborative learning: Computers enable students to collaborate with their peers on projects and assignments. They can work together on shared documents, conduct online discussions, and exchange ideas, fostering teamwork and enhancing their communication skills.
- Creating and editing documents: Computers provide tools for creating and editing documents, such as word processors and presentation software. Students can write essays, create presentations, and develop various types of multimedia content, enhancing their writing and presentation skills.
- Online assessments and quizzes: Computers are used for conducting online assessments and quizzes, allowing teachers to evaluate students' understanding of the material and provide immediate feedback. This helps in identifying areas that need further attention and tailoring the teaching approach accordingly.
- Learning management systems: Computers are integrated with learning management systems that provide a centralized platform for teachers to manage course materials, assignments, grades, and communication with students. This streamlines administrative tasks and enhances the organization and efficiency of the learning process.
- Programming and coding: Computers are used to teach students programming and coding skills. They can learn to write code, develop software applications, and explore the world of technology, fostering computational thinking and problem-solving abilities.
- Multimedia and visual learning: Computers enable students to access multimedia content such as videos, simulations, and interactive visualizations. This visual learning approach enhances comprehension and retention of complex concepts.
It is important to note that while computers offer numerous benefits in education, their usage should be balanced with other teaching methods to ensure a well-rounded learning experience that includes hands-on activities, physical exercise, and social interaction.
Test: Introduction To Computers- 1 - Question 8

Computers are used for creating ___ in the film.

Detailed Solution for Test: Introduction To Computers- 1 - Question 8
Computers are used for creating special effects in the film.

  • Definition: Special effects in films refer to the use of computer-generated imagery (CGI) and other digital techniques to enhance or create visual elements that are difficult or impossible to achieve in real life.

  • Role of Computers: Computers play a crucial role in creating special effects by providing the necessary tools and software for artists and technicians to manipulate and enhance images.

  • CGI: Computer-generated imagery is a commonly used technique in special effects that involves creating realistic or fantastical visual elements using computer software.

  • Integration: Computers are used to seamlessly integrate CGI elements with live-action footage, making it appear as if they are part of the real world.

  • Simulation: Computers are also used to simulate physical phenomena such as explosions, fire, water, and weather effects, which can be difficult or dangerous to achieve practically.

  • Enhancements: Computers allow for the enhancement of practical effects by digitally enhancing or altering elements in the scene to create a more visually appealing or realistic result.

  • Animation: Computers are used for animating characters, creatures, and objects in special effects sequences, bringing them to life and adding a sense of realism or fantasy.

  • Post-Production: Computers are used extensively in the post-production phase of filmmaking to refine and polish special effects, compositing multiple layers of CGI and live-action footage together.


Given the options presented, the correct answer is C: special effects. Computers are instrumental in the creation of special effects in films, providing the tools and technology needed to bring visual elements to life and enhance the overall cinematic experience.

Test: Introduction To Computers- 1 - Question 9

In hospitals computers are used for ___.

Detailed Solution for Test: Introduction To Computers- 1 - Question 9
Computers in Hospitals
In hospitals, computers play a crucial role in various aspects of healthcare management and patient care. They are used for:
1. Electronic Medical Records (EMR): Computers are used to maintain and store patient medical records electronically. This allows healthcare professionals to easily access and update patient information, improving the efficiency of healthcare delivery.
2. Medical Imaging: Computers are used for processing and analyzing medical images such as X-rays, CT scans, and MRIs. This helps in accurate diagnosis and treatment planning.
3. Laboratory Testing: Computers are used to automate and manage laboratory testing processes. They help in tracking samples, analyzing test results, and generating reports.
4. Telemedicine: Computers enable healthcare professionals to provide remote consultations and monitor patients through video conferencing and other communication technologies. This improves access to healthcare, especially in remote areas.
5. Medication Management: Computers are used for medication ordering, dispensing, and administration. They help in reducing medication errors and ensuring patient safety.
6. Decision Support Systems: Computers provide healthcare professionals with access to medical databases, clinical guidelines, and decision support tools. This assists in making evidence-based decisions and improving patient outcomes.
7. Medical Research: Computers are used for data analysis, statistical modeling, and simulation in medical research. They help in studying disease patterns, predicting outcomes, and developing new treatments.
8. Hospital Administration: Computers are used for managing hospital operations, including scheduling appointments, billing, inventory management, and financial tracking.
In conclusion, computers are extensively used in hospitals for tasks ranging from medical record keeping to assisting in surgeries. They have revolutionized healthcare delivery, improving efficiency, accuracy, and patient care.
Test: Introduction To Computers- 1 - Question 10

In space technology, computers are used for controlling the functions of ___.

Detailed Solution for Test: Introduction To Computers- 1 - Question 10
Answer:
In space technology, computers are primarily used for controlling the functions of satellites. Here is a detailed explanation:
Satellite Control:
- Satellites are equipped with onboard computers that control various functions and operations.
- These computers are responsible for maintaining the satellite's orbit, attitude, and position in space.
- They receive commands from ground stations and execute them to perform specific tasks such as capturing images, collecting data, or transmitting signals.
Data Processing:
- Computers on satellites process the data collected from various sensors and instruments.
- They analyze and interpret the data to extract useful information about the Earth, space, or other celestial bodies.
- This processed data is then transmitted back to Earth for further analysis by scientists and researchers.
Communication:
- Computers play a crucial role in satellite communication systems.
- They handle the transmission and reception of signals to establish communication links between satellites and ground stations.
- These computers ensure reliable and efficient data transfer between different points in the space communication network.
Mission Control:
- Computers are extensively used in mission control centers to monitor and control satellites during their operations.
- They provide real-time telemetry data, monitor satellite health and status, and enable operators to make necessary adjustments or troubleshoot any issues.
In summary, computers in space technology are primarily used for controlling satellites, processing data, facilitating communication, and supporting mission control operations.
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