Binary Code & 74HC595 Shift Register with Arduino – Post-Test | Lesson 8
1. What does the binary system use to represent numbers?
Only 1s and 0s
All numbers from 0 to 9
Letters and symbols
2. What is the main purpose of a 74HC595 shift register?
Control many outputs using few Arduino pins
Read analog sensors
Convert voltage levels
3. Which function sends binary data to the shift register?
shiftOut()
digitalRead()
analogWrite()
4. What type of connection does the 74HC595 use to receive data?
Serial
Parallel
Wireless
5. What are the names of the three important control wires on the shift register?
Talk, Start, What to Do
Red, Green, Blue
Power, Ground, Enable
6. What is the binary equivalent of the decimal number 5?
0101
1010
1100
7. What is the decimal value of the binary number 1101?
13
11
15
8. Which of the following is the binary representation of 255?
11111111
00001111
10101010
9. Why is 255 the highest value you can send using an 8-bit microcontroller?
8 bits can only represent values from 0 to 255
256 is a reserved number
The microcontroller automatically rounds values down
10. What is the decimal equivalent of the binary number 10000000?
128
64
256
11. In your own words, describe the binary counting system and what binary means.
12. "We’d love your feedback on this lesson. What went well, and what could be improved?"
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