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Capacitors can be used to absorb the “electrical noise” from a switch.

17. What is a seven segment display?
A group of seven LEDs arranged to form a pattern in the shape of the
number eight.

18. Why do we use seven segment displays?

To translate computer data into information people can easily understand.

19. What is a binary coded decimal counter?

An IC that counts like we do, but stores the data in binary.

20. What does a binary coded decimal to seven segment display IC do?
It takes the BCD data from a counter (or other source) and converts it to the
data a seven segment display needs to display numbers people can
understand.

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