The ASCII characters are custom, specific only to this project. They are programmed into the eeprom one byte at a time, whereas each byte represents data for the column in the character. Each column of data for a character is assigned a unique address in the eeprom and all the columns are collated together to form the character. It is impossible to explain the entire inner workings of the system in just a few paragraphs. I don't recommend this project for anyone who is new to pics / electronics.

Regards,

Trent Jackson