1. Display of line segments. Display of line segments. Display of line segments. Display of line segments. The dot matrix form of liquid crystal consists of M rows × N columns of display units. Assume that the LCD display has 64 rows, each row has 128 columns, and every 8 columns correspond to 8 bits of 1 byte, that is, each row consists of 16 bytes, a total of 16 × 8 = 128 dots. The 64 × 16 display units on the screen correspond to the 1024 bytes of the display RAM area, and the content of each byte corresponds to the brightness of the corresponding position on the screen. For example, the brightness of the first line of the screen is determined by the 16 bytes of RAM area 000H~00FH. When (000)=FFH, a short bright line with a length of 8 dots is displayed in the upper left corner of the screen; when (3FFH)=FFH, a short bright line is displayed in the lower right corner of the screen; when (000H)=FFH, (001H)=00H, (002H)=FFH, (003H)=00H, ... (00EH)=FFH, (00FH)=00H, a dotted line consisting of 8 bright lines and 8 dark lines is displayed at the top of the screen. This is the basic meaning of LCD display.
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