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micro:bit Variables

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8 questions
Show answers
  • Q1
    What is a variable in micro:bit programming?
    A named storage location for data values
    A hardware component that displays output
    A type of program loop
    A function that performs calculations
    30s
  • Q2
    What is a valid variable name in micro:bit programming?
    MyVar
    myVar
    my var
    my_var
    30s
  • Q3
    What data types can be assigned to a variable in micro:bit programming?
    Numbers only
    Numbers, strings, and booleans
    Strings only
    Booleans only
    30s
  • Q4
    What symbol is used to assign a value to a variable in micro:bit programming?
    =
    +
    :
    -
    30s
  • Q5
    What is the scope of a variable in micro:bit programming?
    The area of the program where the variable can be accessed
    The memory location of the variable
    The type of data assigned to the variable
    The time when the variable was created
    30s
  • Q6
    What happens if a variable is not initialized with a value in micro:bit programming?
    It will have a default value of 'null'
    The program will crash
    It will have a default value of 'undefined'
    It will have a default value of '0'
    30s
  • Q7
    What is the difference between a local variable and a global variable in micro:bit programming?
    There is no difference between a local and global variable in micro:bit programming
    A local variable is initialized with a value, while a global variable is not
    A global variable is only accessible within the function or block of code where it is defined, while a local variable can be accessed from anywhere in the program
    A local variable is only accessible within the function or block of code where it is defined, while a global variable can be accessed from anywhere in the program
    30s
  • Q8
    What is the advantage of using variables in micro:bit programming?
    It improves the accuracy of program calculations
    It makes the code run faster
    It reduces the amount of memory used by the program
    It makes the code more flexible and easier to maintain
    30s

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