Elements of Computer Systems Quiz
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Which of the following correctly defines computer hardware?

  • The network connections that allow data sharing.
  • The physical components and tangible parts of a computer system. (correct)
  • The collection of software applications that run programs.
  • The set of instructions given to the computer for processing.

    • What is meant by 'data' in the context of a computer system?

  • Information processed and useful for decision making.
  • The raw facts and figures fed into a computer for processing. (correct)
  • The collection of software functionalities.
  • Instructions for operating system functionalities.

    • Which of the following components is not classified as computer hardware?

  • Operating system (correct)
  • Motherboard
  • Hard disk drive
  • Graphic card

    • What term is used to describe the users associated with a computer system?

    <p>Live-ware</p> Signup and view all the answers

    Which procedure involves a step by step series of instructions specifically for achieving output?

    <p>Software oriented procedure</p> Signup and view all the answers

    What is the primary function of connectivity in a computer system?

    <p>To allow resource sharing and communication between computers.</p> Signup and view all the answers

    Which of the following is considered a type of system software?

    <p>Utility software</p> Signup and view all the answers

    Which component acts as the outer structure for many computer parts?

    <p>Computer case</p> Signup and view all the answers

    What is the main function of a Bar Code Reader?

    <p>To read light and dark line data</p> Signup and view all the answers

    Which of the following best describes the function of an Optical Mark Reader (OMR)?

    <p>To recognize marks made by pencil or pen</p> Signup and view all the answers

    What is the role of pixels in monitors?

    <p>They form images on the screen</p> Signup and view all the answers

    Which of the following is considered a non-impact printer?

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

    What distinguishes SRAM from DRAM in terms of data retention?

    <p>SRAM retains data until power is off</p> Signup and view all the answers

    Which type of printer uses a hammer mechanism to print?

    <p>Dot Matrix Printer</p> Signup and view all the answers

    Which device is primarily used as an output device in a computer system?

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

    What is the main characteristic of RAM as a primary storage device?

    <p>It is used for temporary data storage during operation</p> Signup and view all the answers

    What differentiates PROM from EPROM?

    <p>EPROM can be erased with UV rays or electrical signals.</p> Signup and view all the answers

    Which of the following is a removable storage device?

    <p>Blu Ray Disk</p> Signup and view all the answers

    How is EEPROM different from traditional EPROM?

    <p>EEPROM can be erased using electrical signals.</p> Signup and view all the answers

    Which statement about fixed and removable secondary memory is true?

    <p>Removable devices include Pen Drives and Blu Ray Disks.</p> Signup and view all the answers

    Which type of EPROM can be erased using UV rays?

    <p>UV EPROM</p> Signup and view all the answers

    What is the main advantage of handling electrical signals over UV rays for erasing EPROM?

    <p>Electric signals are easier and safer to handle.</p> Signup and view all the answers

    What is the primary function of the power supply unit (PSU)?

    <p>Convert alternating current (AC) to low-voltage DC power</p> Signup and view all the answers

    What category does a Flash Disk fall under?

    <p>Removable storage device</p> Signup and view all the answers

    Which component is often referred to as the 'brain' of the computer?

    <p>Central Processing Unit (CPU)</p> Signup and view all the answers

    How is a PROM specifically programmed?

    <p>Using a PROM programmer or burner.</p> Signup and view all the answers

    What is the purpose of the CMOS battery on the motherboard?

    <p>To provide backup power for the BIOS settings</p> Signup and view all the answers

    What does the Read-Only Memory (ROM) typically store?

    <p>The BIOS that runs when the computer is powered on</p> Signup and view all the answers

    Which of the following statements about expansion cards is true?

    <p>They add functionality to a computer system via the expansion bus.</p> Signup and view all the answers

    Which input device is considered the most popular for data entry?

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

    How does the motherboard interact with the CPU?

    <p>Using buses that connect internal components</p> Signup and view all the answers

    What is the typical function of output devices?

    <p>Display information in a human-readable format</p> Signup and view all the answers

    What is the primary function of a mouse?

    <p>To sense movement and control the cursor</p> Signup and view all the answers

    How does a joystick operate?

    <p>It moves in all four directions to control the cursor</p> Signup and view all the answers

    What device is primarily used for drawing or selecting items on a computer monitor?

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

    Which device is specifically known for converting analog signals from a television or camera into digital form?

    <p>Digital Digitizer</p> Signup and view all the answers

    What is the primary use of a scanner?

    <p>To input data from paper documents</p> Signup and view all the answers

    Which input device uses magnetic ink to process bank cheques?

    <p>Magnetic Ink Card Reader</p> Signup and view all the answers

    What type of input does a microphone capture?

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

    What is the role of an Optical Character Reader (OCR)?

    <p>To read printed text</p> Signup and view all the answers

    Study Notes

    Overview of Computer Systems

    • A computer system comprises hardware, software, users (live-ware), procedures, and data.
    • Key components include the CPU, memory, input/output devices, and storage.

    Hardware

    • Hardware refers to the physical components of a computer, including:
      • Monitor, mouse, keyboard, HDD, graphic cards, sound cards, memory, and motherboard.
    • All hardware elements are tangible objects essential for computer functionality.

    Software

    • Software classifications include:
      • System Software: Manages hardware and system resources.
      • Application Software: Allows users to perform specific tasks.
      • Operating Systems: Facilitates user interaction with computer hardware.
      • Utility Software: Provides maintenance and system management.
      • Language Processors: Translates programming code to machine language.
      • Connectivity Software: Enables network connections.

    Users (Live-ware)

    • Users are critical, serving roles such as:
      • System Analysts: Analyze and design computer systems.
      • System Programmers: Write and maintain software.
      • System Operators: Manage hardware and software operations.

    Procedures

    • Procedures are systematic instructions for performing tasks, categorized into:
      • Hardware-oriented procedures.
      • Software-oriented procedures.
      • Internal procedures.

    Data

    • Data is raw facts processed into information used for decision-making.
    • The computer interprets data using machine language and stores it in memory.

    Connectivity

    • Enables computers to share resources like files and printers through various means:
      • Wires, cables, satellites, infrared, Bluetooth, and microwave transmission.

    Computer Case

    • The computer case is an enclosure made of plastic or metal housing key components.

    Power Supply

    • The Power Supply Unit (PSU) converts AC to low-voltage DC power for internal components, with laptops utilizing built-in batteries.

    Motherboard

    • The motherboard connects all computer parts, including CPU, RAM, and disk drives, through integrated circuitry.

    Central Processing Unit (CPU)

    • The CPU, known as the "brain" of the computer, performs calculations and is cooled by heat sinks and fans.
    • Often includes an on-die Graphics Processing Unit (GPU).

    Random Access Memory (RAM)

    • RAM temporarily stores data and code actively accessed by the CPU.

    Read-Only Memory (ROM)

    • ROM stores BIOS firmware necessary for booting the computer and management tasks during startup.

    Buses

    • Buses facilitate communication between the CPU and other internal components.

    CMOS Battery

    • Powers the CMOS memory on the motherboard to store system settings.

    Expansion Cards

    • Inserted into the motherboard to enhance functionality not provided by the motherboard.

    Input Devices

    • Allow user input into the system:
      • Keyboard: Common input device for data entry.
      • Mouse: Pointing device for cursor navigation.
      • Joystick: Pointing device for gaming and graphical applications.
      • Light Pen: Used to select items and draw on screens.
      • Trackball: Ball-based pointing device for navigation.
      • Scanner: Converts physical documents into digital form.
      • Digital Digitizer: Converts analog signals to digital data.
      • Microphone: Captures audio input for digital use.
      • MICR: Reads magnetic ink from bank cheques.
      • OCR: Converts printed text into digital format.
      • Bar Code Readers: Reads barcoded data for inventory and sales.
      • OMR: Recognizes marks made by pen on forms.

    Output Devices

    • Display processed information in a human-readable format:
      • Monitors: Main output device forming images from pixels.
      • Types of Monitors: CRT and Flat-Panel Display.
      • Printers: Produce hard copies of documents; includes:
        • Impact Printers: Dot Matrix and Daisy Wheel.
        • Non-Impact Printers: Laser and Inkjet.
      • Speakers and Headsets: Output audio signals.

    Primary Storage Devices

    • Types of primary memory:
      • RAM: DRAM (dynamic) loses charge and needs refreshing; SRAM (static) retains data without refreshing.
      • ROM:
        • PROM: Programmable once.
        • EPROM: Erasable and reprogrammable using UV light or electrical signals.

    Secondary Storage Devices

    • Classifications based on fixed or removable:
      • Fixed Devices: Hard Disk Drive, CD/DVD Drive.
      • Removable Devices: Pen Drives, Blu-ray Disks.

    Conclusion

    • Each hardware and software component plays a vital role in the functionality of a computer, highlighting the importance of understanding how they work together effectively.

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    Description

    Test your knowledge of the essential components of computer systems with this quiz. You'll identify key elements and describe the functions of basic computer components. Perfect for beginners looking to reinforce their understanding of computer architecture.

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