Driving LCDs and LEDs.
Notes
and Handouts
Lecture Notes - slides for this week's lecture.
LCD FAQ - This is the best documentation available for the configuration and programming of common text type LCDs.
LCD Demo VIDEO - This is a Flash video demonstrating the LCD1 sample program below.
74HC4511 Data Sheet - This is a BCD to 7 Segment Decoder/Latch/Driver for External Control of 7 Segment LEDs.
LCD Display Description (44780) - This is a data sheet covering the widely used Hitachi 44780 Character Display Controller.
7 Segment LED Display Circuit and Map - This diagram is also in Part 1 of the Notes. It shows the circuit used for programs LED1 and LED2 for connecting and controlling the 2 LED segments.
Sample Code
LCD1 - Self Extracting Zip File for Standard Hitachi 44780 LCD Displays - Also refer to LCD description above
LED1 - Self
Extracting Zip File for 2 - 7 Segment Multiplexed LED Displays
LED2 - Self
Extracting Zip File for 2 - 7 Segment Multiplexed LED's using Timer Interrupt
for Multiplexing
LCD Tips and Tricks
LCD4PIN - SThis
diagram shows how to connect a parallel LCD with only 4 I/O lines
Internet Sources for LED and LCD Displays
All Electronics - Surplus and new components. A lot of
inexpensive stuff.
Marlin P Jones - A wide variety of surplus and new
components. Many are really inexpensive.
Jameco - New components, modules, tools, etc.
JDR - New components, modules, tools, etc.
Digikey- A very large selection of stuff but generally higher
priced than the surplus places.
Newark - Similar to Digikey.
If you have comments or suggestions about this page, email me at ecp@hte.com