题目内容
The dynamic scanning display circuit of LED digital tube can cause the false appearance of "multiple LED digital tubes on at the same time" as long as the display time of each digital tube is well controlled, so as to achieve the effect of multiple LED digital tubes on display at the same time.
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Using a special keyboard / display chip, the internal hardware scanning circuit of the chip can automatically complete the display data scanning refresh and keyboard scanning.
To control the display of LED dot matrix display is essentially to control the level code added to the line and column lines to control the lighting of some light-emitting diodes (points), so as to display various characters composed of different light-emitting points.
16 × 16 dot matrix display is composed of four 4 × 4 LED dot matrix displays.
LCD 1602 LCD display module, can display 2 lines, each line of 16 characters.
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