LCD1602显示1602液晶也叫1602字符型液晶，它是一种专门用来显示字母、数字、符号等的点阵型液晶模块。它由若干个5X7或者5X11等点阵字符位组成，每个点阵字符位都可以显示一个字符，每位之间有一个点距的间隔，每行之间也有间隔，起到了字符间距和行间距的作用，正因为如此所以它不能很好地显示图形（用自定义CGRAM，显示效果也不好）。-LCD1602 LCD display is also called 1602 1602 character LCD, which is a display devoted to letters, numbers, symbols and other dot matrix LCD module. It consists of several 5X7 or 5X11 such as dot matrix character bits, each bit can be character dot matrix display a character that has a dot pitch between each interval, the interval between each row also has played a character spacing and line spacing effect, and as such it can not be a good display graphics (with a custom CGRAM, the display is not good).