it functions like a real LCD how to make a letter First, select what row you want for each letter by clicking the buttons from 1-9 ------ Then, keep clicking till you find the letter, better to count and click the button in your mind rather then reading the letter (if you want empty row (delete) u click all the way to z then click) --- To erase fully click the spacebar.
Thanks to MrLightning for the original project 7-Segment Display.