Terms used in LCD

Terms used in LCD	display data RAM
DD RAM	display data RAM
CG RAM	character generator RAM
ACC	CG RAM address
ADD	DD RAM address corresponding to cursor address
AC	address counter used for both CG and DD
1/D = 1 for increment	1/D = 0 for decrement
S = 1 accompanies display shift
S/C = 1 display shift	S/C = 0 for cursor shift
R/L = 1 shift to right	R/L = 0 shift to left
DL = 1 8 bits	DL = 0 4 bits
F = 1 5x10 dots	F = 0 5x7 dots
BF = 1 Internal operation	BF = 0 can accept instruction