Grade 10 EOY Computer Science Topics
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Questions and Answers

What is the primary purpose of a spreadsheet?

  • Create visual graphics
  • Code software
  • Organize and categorize data (correct)
  • Send emails

    • Cells in a spreadsheet are identified by a combination of a letter for columns and a number for rows.

    True

    What is the intersection of a row and a column in a spreadsheet called?

    cell

    In Excel, rows are identified by _______.

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

    Match the following spreadsheet components with their descriptions:

    <p>Formula = Expression that calculates the value(s) of a cell Worksheet = Collection of cells organized in rows and columns Function = Predefined formula available in Excel Cell Range = Group of cells that form a rectangle on the screen</p> Signup and view all the answers

    What are some advantages of using a computer?

    <p>Information can be stored</p> Signup and view all the answers

    Which hardware components are part of a computer system?

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

    Define Information Technology (IT).

    <p>Information Technology is a field that focuses on the use of computers, software, networks, and electronic systems to manage and process data, information, and knowledge.</p> Signup and view all the answers

    ___ is the temporary holding space for data and instructions in a computer.

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

    Match the output device with its description:

    <p>Laser Printer = Utilizes a laser beam to produce high-quality text and graphics Ink-jet Printer = Sprays tiny droplets of ink onto paper to create text or images Thermal Printer = Generates images by heating thermal paper or other media Projector = Projects an image onto a surface for viewing by an audience Headphones = Pair of small speakers worn over the ears to listen to audio privately Monitor = Display screen used to output visual information</p> Signup and view all the answers

    Study Notes

    Computer Fundamentals

    • A computer system consists of integrated devices that input, process, store, and output data and information.
    • Advantages of using a computer:
      • Increase productivity
      • Easy data entry
      • Quick processing
      • Data storage
      • Sorting and organizing information
    • Disadvantages of using a computer:
      • Health concerns (e.g., social isolation)
      • Job reduction
      • Cybersecurity risks
      • Increased dependency on computers
      • Learning curve
      • Dependence on electricity

    Input Devices

    • Examples of input devices:
      • Keyboard
      • Mouse
      • Microphone
      • Touch-sensitive devices (touch screen, touchpad)
    • Types of input devices:
      • Manual entry devices (e.g., keyboard, mouse)
      • Direct data entry devices (e.g., barcode reader, OCR)

    Output Devices

    • Examples of output devices:
      • Monitor
      • Speaker
      • Printer (laser, inkjet, dot matrix, thermal)
      • Headphones
      • Projector
    • Types of output:
      • Soft copy output (temporary, displayed on screen or audio)
      • Hard copy output (permanent, printed on paper or other material)

    Processing

    • Processing involves transforming input data into meaningful information using the CPU.
    • CPU components:
      • Control Unit
      • Arithmetic Logic Unit

    Memory

    • Types of memory:
      • ROM (Read Only Memory)
      • RAM (Random Access Memory)
    • Characteristics of memory:
      • RAM is volatile (contents can be accessed and modified)
      • ROM is non-volatile (contents cannot be removed)

    Storage

    • Categories of secondary storage:
      • Magnetic storage (e.g., hard disks, floppy disks, magnetic tape)
      • Optical storage (e.g., CD-ROM, CD-R, CD-RW, DVD)
      • Solid-state storage (e.g., USB drive, flash drive, smart cards)
      • Cloud storage (e.g., Dropbox, iCloud, Google Drive)
    • Storage media:
      • Physical materials or components that store data, instructions, and information

    Units of Storage

    • Basic unit: bit (binary digit)
    • Calculating units of storage:
      • Multiply when moving from a larger unit to a smaller unit
      • Divide when moving from a smaller unit to a larger unit

    Spreadsheets

    • Definition: a grid of cells organized in rows and columns
    • Purpose: organize and categorize data into a logical format
    • Examples of spreadsheet software: Excel, Apple Numbers, Quip, Smartsheet, Google Sheets

    Spreadsheet Components

    • Row: a group of cells that runs from left to right (identified by numbers)
    • Column: a group of cells that runs from top to bottom (identified by letters)
    • Cell: the intersection of a row and a column
    • Cell address: an alphanumeric value used to identify a specific cell
    • Cell range: a group of cells that form a rectangle on the screen

    Spreadsheet Data Types

    • Values: numbers that can be used in calculations (right-aligned)
    • Labels: text data (left-aligned)

    Spreadsheet Functions

    • Formula: an expression that calculates the value of a cell
    • Examples of functions:
      • DATE function: creates a date based on individual components (year, month, day)
      • IF function: returns one value if a condition is true and another value if false
      • PRODUCT function: multiplies all numbers given as arguments
      • AVERAGE function: returns the average of the arguments
      • COUNT function: counts cells that contain values only
      • COUNTA function: counts cells that contain labels, values, or both
      • COUNTIF function: counts cells that meet a given condition

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    Related Documents

    Copy of Information Technology EOY_CSEC .pdf

    Description

    This quiz covers all the topics from the start of the year, including spreadsheets, computer fundamentals, and software. It includes terms, formulas, and functions, as well as chart and pivot table creation.

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