If you want it to show, you must have a way to drive it.
C language lcd 1602 program is a driver written according to its own running mode, which can display our data conveniently.
Because the running speed of single chip microcomputer is faster than that of lcd 1602, when controlling it, it is necessary to judge whether it is idle now, just like LCD_BUSY_WAIT (), and only return when lcd 1602 is idle, that is, wait for lcd 1602 to be idle and run the follow-up things of writing instructions.
The gap between the poor and the rich.
ear
From the ear. Poor people have small ears and thin earlobes, while rich people