i have a problem .. while function setting of the LCD module.. there is a bit to be set either High or Low to control 2-line display or 1-line display respectively... however.. i found a piece of datasheet that is suitable to both 4x20 character and 2x20 character ...
if in 4x20 character... first~fourth lines, how can 2 or 1 line display control them..?
if in 4x20 character... first~fourth lines, how can 2 or 1 line display control them..?