Page 318 - ARM Based Microcontroller Projects Using MBED

304 10. USING LIQUID CRYSTAL DISPLAYS (LCDs)

10.6 SUMMARY

In this chapter we have learned about the following:
• LCD displays
• LCD connection to a Nucleo-F411RE development board
• LCD functions
• Projects using LCDs with the Nucleo-F411RE development board

10.7 EXERCISES

1. Draw the circuit diagram to show how an LCD can be connected to a Nucleo-F411RE
development board.
2. An ultrasonic sensor pair is connected to a Nucleo-F411RE development board. In addition
an LCD is connected to the development board. Write a program to display the distance
from the sensors on the LCD.
3. Draw the circuit diagram to show how a keypad can be connected to a Nucleo-F411RE
development board.
4. A keypad and an LCD are connected to a Nucleo-F411RE development board. Write a
program to display the numbers entered on the keypad on the LCD.
5. It is required to connect a display to a microcontroller system. Explain why you might have
to choose an LCD instead of a 7-segment display.