The Complete Beginners Guide to Arduino - 2021 - 7-Segment Displays Using the MAX7219 - Part 2 - Integers

What command is used to display a single digit on a 7-segment display?

• showInteger

• displayNumber

• setDigit

• setCharacter

How many parameters does the setDigit command require?

• Three

• Five

• Four

• Two

What is the maximum number of digits that can be displayed on an 8-digit 7-segment display?

• 8

• 9

• 7

• 6

What data type is used to handle numbers larger than an integer in the function?

• long

• float

• short

• double

Which mathematical function is used to determine the number of digits in a number?

• ceil

• abs

• floor

• log10

What is the purpose of the floor function in the digit counting process?

• To remove the decimal part

• To convert negative numbers to positive

• To round up the number

• To add one to the result

What should be done if the number of digits in the current number is less than the previous number?

• Do nothing

• Clear the display

• Add leading zeros

• Display an error

How is a negative number indicated on the 7-segment display?

• By displaying a minus sign

• By blinking the number

• By changing the color

• By displaying a zero

What happens if a number larger than the display capacity is attempted to be shown?

• The display shows an error

• The function returns without displaying

• The display shows random numbers

• The display shows the maximum number

What is the role of the 'last amount of digits' variable in the function?

• To calculate the current number's digits

• To reset the display

• To keep track of the previous number's digit count

• To store the maximum number