Control

If you want to show text on the display you need to include a font file in the BASCOM program. There are several fonts available like a 8x8 font and a 16x16 font, but the font file consume memory, the larger the font file the larger the program becomes. You can also create your own font, there are applications on the web to create your own fonts.
To show a picture on the display you need to include a picture file, they also consume a lot of space in the microcontroller memory.

GLCD pic 2

Left you see a picture with the characterset that uses the smaller font set 8x8. It has 255 different characters. The program glcdks108_txt.txt can downloaded below. 

GLCD pic 3 And a picture with big text that uses the bigger 16x16 font, displayed on the GLCD, progams made in BASCOM-AVR. The program glcdks108_txt.bas can downloaded below. 

GLCD pic GRF This pictures shows text and a sine and cosin, displayed on the GLCD, progams made in BASCOM-AVR.  

GLCD pic 4 This is a blue GLCD from Crystalfonts, it has the same pinout, only the connection of the white background LED is reversed.