Computer Hardware and Software Overview
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Questions and Answers

What is the primary role of a computer in enhancing human capabilities?

  • To replace human intelligence completely
  • To act solely as a storage device for information
  • To enhance the ability to perform tasks requiring mental effort (correct)
  • To provide entertainment through games and media

    • Which component is NOT considered hardware in a computer system?

  • Keyboard
  • Printer
  • Operating System (correct)
  • Monitor

    • What is essential for a computer to function effectively as a mind tool?

  • An extensive collection of peripheral devices
  • A correctly installed software program (correct)
  • A powerful graphics card
  • A fast internet connection

    • What does the 'processing' in a computer's operation refer to?

    <p>The manipulation of data according to predefined instructions</p> Signup and view all the answers

    Which of the following is an example of input that a computer can process?

    <p>Text typed in a document</p> Signup and view all the answers

    Which of the following statements is TRUE regarding data representation in a computer?

    <p>Data includes symbols that may represent facts and ideas</p> Signup and view all the answers

    What role do peripheral devices play in a computer system?

    <p>They enhance the input, output, and storage capabilities of the computer</p> Signup and view all the answers

    Which of the following statements about software is correct?

    <p>Software is a set of instructions for a computer to perform tasks.</p> Signup and view all the answers

    How many characters can be represented using 7 bits in the ASCII standard?

    <p>128 characters</p> Signup and view all the answers

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

    <p>Operating System</p> Signup and view all the answers

    Which standard does the ASCII coding method represent?

    <p>American Standard Code for Information Interchange</p> Signup and view all the answers

    In an 8-bit word length microcomputer, what is the purpose of the 8th bit?

    <p>To extend the maximum representation capacity</p> Signup and view all the answers

    Which of the following correctly defines data?

    <p>Raw inputs such as text, images, and audio</p> Signup and view all the answers

    Which of the following best describes the function of hardware in a computer system?

    <p>To carry out physical activities involved in data processing</p> Signup and view all the answers

    What is the definition of information in the context of computer systems?

    <p>Processed data utilized for decision making</p> Signup and view all the answers

    Which component is categorized as an input unit in computer hardware?

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

    What is a defining feature of a CD-ROM?

    <p>Data can only be read and not written.</p> Signup and view all the answers

    Which type of CD allows for data to be recorded only once?

    <p>CD-R</p> Signup and view all the answers

    Which of the following statements about DVDs is true?

    <p>A typical DVD can hold significantly more data than several CDs.</p> Signup and view all the answers

    What distinguishes a DVD-RW from a DVD-R?

    <p>DVD-RW allows for rewriting data multiple times.</p> Signup and view all the answers

    What is the primary purpose of a Flash disk?

    <p>To provide convenient secondary storage.</p> Signup and view all the answers

    Which characteristic is unique to CD-RW compared to CD-R?

    <p>Can be rewritten multiple times.</p> Signup and view all the answers

    How do data and instructions move within a computer?

    <p>By means of a bus.</p> Signup and view all the answers

    Which type of DVD is specifically a read-only format?

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

    What is the main function of input devices?

    <p>Translate user data and instructions into a computer-readable form</p> Signup and view all the answers

    Which of the following is an example of a non-impact printer?

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

    What type of device is a mouse classified as?

    <p>Pointing device for instruction input</p> Signup and view all the answers

    Which component of a computer system is responsible for processing data?

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

    What kind of output device directly generates hard copy materials?

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

    Which of the following devices is NOT commonly classified as an input device?

    <p>Plasma Screen</p> Signup and view all the answers

    Which of the following is a characteristic of impact printers?

    <p>They make physical contact with the paper to create prints</p> Signup and view all the answers

    What type of device is necessary for graphic input?

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

    What is the primary function of a hard disk?

    <p>To store and retrieve data using rigid disks</p> Signup and view all the answers

    Which characteristic is NOT true for magnetic tape?

    <p>It provides very fast read/write operations.</p> Signup and view all the answers

    How is data represented on optical storage devices?

    <p>As holes burned into the disk's surface</p> Signup and view all the answers

    What is an advantage of optical storage over magnetic tape?

    <p>Optical storage tends to be more durable.</p> Signup and view all the answers

    What differentiates a hard disk from a floppy disk?

    <p>Hard disks can transmit data faster than floppy disks.</p> Signup and view all the answers

    Which of the following storage devices is typically used for data archiving?

    <p>Magnetic tapes</p> Signup and view all the answers

    What is the storage capacity range commonly associated with hard disks?

    <p>60 to 80 GB</p> Signup and view all the answers

    Which statement best describes the access method of magnetic tape?

    <p>Sequential data storage and access</p> Signup and view all the answers

    What happens when you drag files while holding the Ctrl key?

    <p>It copies the files to a new location.</p> Signup and view all the answers

    Which method can be used to create a new folder?

    <p>Right-click and select New, then click Folder.</p> Signup and view all the answers

    What is the purpose of the Recycle Bin?

    <p>To temporarily hold deleted files for potential recovery.</p> Signup and view all the answers

    What key combination permanently deletes a file without moving it to the Recycle Bin?

    <p>Shift + Delete</p> Signup and view all the answers

    What should you do if you cannot delete a file because it is currently in use?

    <p>Restart your computer or close the program using the file.</p> Signup and view all the answers

    What occurs when you delete a file from a USB flash drive?

    <p>The file is permanently deleted without any prompts.</p> Signup and view all the answers

    Which of the following statements is true about the toolbars provided in folders?

    <p>The New folder button creates a new folder in the currently selected location.</p> Signup and view all the answers

    How can a user delete a file or folder using keyboard shortcuts?

    <p>By pressing Delete or Del key on the keyboard.</p> Signup and view all the answers

    Study Notes

    Computer Hardware and Software

    • Computers are "mind tools" enhancing mental tasks like calculations, sorting, and searching, often more rapidly and accurately than humans.
    • A computer system includes the computer, peripheral devices, and software.
    • Hardware refers to the physical components (e.g., computer, peripheral devices) that manipulate data.
    • Peripheral devices expand the computer's input, output, and storage capabilities.
    • Software is a set of instructions that tells a computer how to perform a task.
    • Computers become more effective when connected to other computers for information sharing.
    • A computer is an electronic device that accepts data as input, processes it according to pre-established instructions or procedures, and produces output.

    Definition of Computer

    • A computer accepts input data in a prescribed format.
    • A computer processes data according to predefined instructions or procedures.

    Characteristics of Computer

    • Speed: Computers operate at high speed, measured in microseconds, nanoseconds, or picoseconds.
    • Storage: Computers store large amounts of information efficiently and quickly access it.
    • Accuracy: Computers are very accurate when there isn't an input error or programming error
    • Automatic: Computers process information without human intervention after instructions are loaded
    • Diligence: Computers perform tasks effectively without fatigue, consistency and maintain accuracy over time

    Limitations of Computers

    • No IQ: Computers need instructions; they cannot make decisions on their own.
    • No feelings: Computers do not have emotions, experiences, or knowledge.
    • Not self-directing: Computers are not independent; they perform only the task instructed.

    Applications of Computers

    • Used in many fields like engineering, entertainment, data processing, operations control, communication systems.
    • Medical diagnosis, controlling medical parameters.
    • Digital libraries, learning tools.

    Data Representation

    • Data in a computer system is represented by a flow of an electric current (on/off, 1/0).
    • Data is manipulated and stored as a combination of 0s and 1s (binary).
    • The basic unit of data storage is the bit, and larger units include the byte and word.
    • Bits are organized into larger meaningful units, measured in units like kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), petabytes (PB).
    • Various standards represent data (e.g., ASCII).

    Data Representation Standards

    • Standard codes like ASCII represent characters using bit patterns.
    • The number of bits used determines the number of characters a computer system can represent.

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    Related Documents

    Chapter 2: Computer Hardware and Software PDF

    Description

    Explore the fundamental concepts of computer hardware and software in this quiz. Understand the roles of physical components and software instructions in enhancing computer capabilities. Test your knowledge on how computers process data and their characteristics.

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