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3 cards from this section. Quick, good the night before a test.
What do 7-segment displays represent?
Think about common devices like clocks and calculators.
How many bits does BCD use for each digit?
Recall how binary numbers work.
What does digital encoding transform?
Think about what we need for controlling a display.
True or False: A 7-segment display can only show numbers.
Remember those segments can form letters too!
A microcontroller needs to display the binary number '0000 1001' on a 7-segment display using BCD. Discuss how to derive the segments that will light up, and explain if this is a valid BCD representation.
Refer to the mapping of segments for each decimal representation.
Suppose you have a scenario where you need to control 4 different 7-segment displays to show a count from 0 to 15. What strategy would you implement to control these displays efficiently?
Consider the timing and pin usage to minimize hardware requirements.
5 more questions in this section. Enroll free to practise them all.
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