字符型型液晶是一种用5×7点阵图形来显示字符的液晶显示器，根据显示的容量可以分为1行16个字、2行16个字、2行20个字等，最常用的为2行16个字，即我们马上要学习的1602液晶模块-LCD is a kind of character with the 5 × 7 dot-matrix graphic LCD display to show the character, according to show the capacity can be divided into a line of 1