Computer Basics Quiz
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Questions and Answers

What do bits represent in a computer?

  • Magnetic states
  • Electric charges
  • Binary digits (correct)
  • Voltage levels

    • Which of the following is NOT a type of internal memory?

  • RAM
  • ROM
  • Hard Disk (correct)
  • Flash Drive (correct)

    • What is the highest memory size mentioned in the content?

  • Terabyte
  • Kilobyte
  • Gigabyte
  • Yottabyte (correct)

    • What effect does more RAM have on a computer's performance?

    <p>It allows more programs to run simultaneously</p> Signup and view all the answers

    Which component is designed to erase data when the computer is turned off?

    <p>RAM</p> Signup and view all the answers

    What is the primary function of input devices?

    <p>To input data into the computer</p> Signup and view all the answers

    Which of the following is NOT a part of a computer system?

    <p>Transmission devices</p> Signup and view all the answers

    Which device is used to display output from a computer?

    <p>Monitor</p> Signup and view all the answers

    What type of device is a hard disk classified as?

    <p>Storage device</p> Signup and view all the answers

    What is the main use of a mouse in a computer system?

    <p>To click and drag objects on the screen</p> Signup and view all the answers

    Which of the following statements accurately describes a computer?

    <p>A computer performs tasks using various devices.</p> Signup and view all the answers

    What does a CD-ROM primarily function as?

    <p>To store data</p> Signup and view all the answers

    Which component is specifically designed to accept data and instructions from the user?

    <p>Keyboard</p> Signup and view all the answers

    Which input device is primarily used for entering data and instructions by typing?

    <p>Keyboard</p> Signup and view all the answers

    What is the main purpose of a mouse in a computer system?

    <p>To control pointer movement and select objects</p> Signup and view all the answers

    Which of the following describes a touch pad?

    <p>A touch-sensitive area used to control pointer movement on a laptop</p> Signup and view all the answers

    Which input device is specifically designed to record voice, music, and sound?

    <p>Microphone</p> Signup and view all the answers

    What is the primary function of a trackball compared to a mouse?

    <p>To allow rolling a ball for pointer movement</p> Signup and view all the answers

    Which device allows users to select objects on a screen by drawing directly on it?

    <p>Light Pen</p> Signup and view all the answers

    What is the primary function of a scanner?

    <p>To input text or pictures into a computer</p> Signup and view all the answers

    What role does the Central Processing Unit (CPU) serve in a computer?

    <p>It processes and stores information</p> Signup and view all the answers

    Which input device is primarily used for video conferencing and live chats?

    <p>Web Camera</p> Signup and view all the answers

    What technology does a touch screen utilize to allow users to select objects directly?

    <p>Capacitive touch</p> Signup and view all the answers

    What does the full form of DVD stand for?

    <p>Digital Video Disk</p> Signup and view all the answers

    Which of the following features describes a Blu-ray Disk?

    <p>Can store up to 128 GB of data</p> Signup and view all the answers

    What is a notable feature of flash drives?

    <p>They are known for being removable and lightweight</p> Signup and view all the answers

    Which of the following best describes a memory card?

    <p>Used for portable devices such as mobiles and cameras</p> Signup and view all the answers

    What is the primary use of multimedia cards?

    <p>They act as storage memory for various portable devices</p> Signup and view all the answers

    What is the primary disadvantage of a Dot Matrix Printer?

    <p>It is very noisy.</p> Signup and view all the answers

    Which printer is most suitable for high-quality prints?

    <p>Laser Printer</p> Signup and view all the answers

    What format does a computer understand for data storage?

    <p>Bits and Bytes</p> Signup and view all the answers

    Which of the following is classified as primary memory?

    <p>ROM (Read Only Memory)</p> Signup and view all the answers

    What is essentially a characteristic of RAM?

    <p>It is volatile memory.</p> Signup and view all the answers

    Which storage device retains data permanently?

    <p>ROM</p> Signup and view all the answers

    What does a printer convert digital data into?

    <p>Hard Copy</p> Signup and view all the answers

    What is the first step to use a printer as described in the activity zone?

    <p>Open Paint and draw a scenery.</p> Signup and view all the answers

    What is the primary function of output devices?

    <p>To display results after processing</p> Signup and view all the answers

    Which of the following is NOT a type of memory in a computer?

    <p>Processor memory</p> Signup and view all the answers

    What is the common name for a Flash drive?

    <p>Pen drive</p> Signup and view all the answers

    Which statement is true regarding the CPU's functions?

    <p>It is responsible for managing all jobs of a computer.</p> Signup and view all the answers

    How many gigabytes are in 1 megabyte?

    <p>0.001 GB</p> Signup and view all the answers

    What is the main purpose of ROM (Read Only Memory)?

    <p>To hold startup instructions for the computer</p> Signup and view all the answers

    Which of the following statements is true about external memory?

    <p>It is also known as secondary memory</p> Signup and view all the answers

    How much data can a standard CD (Compact Disk) hold?

    <p>700 MB</p> Signup and view all the answers

    What is a primary characteristic of hard disks?

    <p>They are fixed inside the CPU box</p> Signup and view all the answers

    Which of the following statements correctly describes a flash drive?

    <p>It is a backup device used for portable storage</p> Signup and view all the answers

    What type of information can a DVD (Digital Versatile Disc) store?

    <p>High-quality video and audio</p> Signup and view all the answers

    What is the disadvantage of accessing data from secondary memory compared to internal memory?

    <p>It takes more time to access data</p> Signup and view all the answers

    Which storage device is described as being portable and often resembles a keychain?

    <p>Flash drive</p> Signup and view all the answers

    Study Notes

    Computer System Overview

    • A computer is an electronic device that processes data and gives meaningful results.
    • Functions of a computer: Input, Processing, and Output.
    • Computers are widely used in various settings including shops, schools, hospitals, and banks.

    Parts of a Computer

    • Input Devices: Input data into the computer (e.g., Keyboard, Mouse).
    • Output Devices: Display results of processed data (e.g., Monitor, Printer).
    • Storage Devices: Store data and programs (e.g., Hard Disk, CD-ROM).
    • Processing Device: Central Processing Unit (CPU) that processes data according to instructions.

    Input Devices

    • Keyboard: Standard keyboard has 104 keys, divided into typing, function, navigation, and control keys.
    • Mouse: Hand-held pointing device used for selecting and controlling objects on the screen.
    • Microphone: Captures voice and sound recordings.
    • Touch Pad: A touch-sensitive pad on laptops, used instead of a mouse.
    • Touch Screen: Allows user interaction by touching the display directly, found in tablets and smartphones.
    • Light Pen: A pen-like device for selecting and drawing on the screen.
    • Scanner: Converts physical documents into digital format; includes Flat Bed, Sheet Fed, and Hand Held scanners.
    • Digital Camera: Captures photos and videos, stored on a memory chip.
    • Web Camera: Captures images and videos for live communication over the internet.

    Processing Device

    • Central Processing Unit (CPU): The brain of the computer, processes data and performs calculations.

    Output Devices

    • Printer: Produces physical copies of digital documents; types include:
      • Dot Matrix Printer: Noisy, creates impressions by striking paper; low quality.
      • Inkjet Printer: Sprays ink for high-quality prints; used for personal documents.
      • Laser Printer: High-speed printing using laser technology; ideal for professional use.

    Storage Devices

    • Internal (Primary) Memory:
      • RAM (Random Access Memory): Temporary working memory; data lost when turned off.
      • ROM (Read Only Memory): Permanent instructions for startup; data retained when turned off.
    • External (Secondary) Memory:
      • Hard Disk: Primary storage medium; can hold large amounts of data (up to 8 TB).
      • CD/DVD: Optical devices for storage; CDs hold up to 700 MB, DVDs 4.7 to 17 GB.
      • Flash Drive (Pen Drive): Portable storage device; can hold up to 4 TB.
      • Memory Card: Used in portable devices; transferred via card readers.

    Bits and Bytes

    • Data represented in binary form (0s and 1s), stored as bits and bytes.
    • 8 bits = 1 byte, with scaling from kilobytes (KB) to zettabytes (ZB).
    • Memory hierarchies include various capacities for efficient data storage.

    Additional Facts

    • The QWERTY keyboard was invented by Sir Christopher Latham Sholes.
    • The computer mouse was invented by Dr. Engelbart.
    • Laser printers were developed by Gary Starkweather at Xerox in 1969.
    • The amount of RAM affects a computer's ability to run multiple applications efficiently.

    Practical Tips

    • To print a document, save the file in a program (e.g., Paint), then access the print option from the file menu.
    • Data manipulation involves transferring programs from external memory to internal memory for processing.

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    Quiz Team

    Description

    Test your knowledge about the fundamental components and functions of computers. This quiz covers input, processing, and output devices, as well as the basic architecture of a computer system. Perfect for beginners or anyone looking to refresh their understanding of computers.

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