AT89C51 Keypad Controlled Scrolling LED Dot Matrix Text

| July 13, 2023 Updated
AT89C51 Keypad Controlled Scrolling  LED Dot Matrix Text

AT89C51 Scrolling LED Circuit Operation: Keypad’t the values ​​entered the program through is continually monitored, “*” key is pressed unless the display of the first letter that section required all letters appear, but the desired letter or number after it is written “*” key is pressed, the entered character sequence element is recognized as a scanning begins again for the next element. Meanwhile, in the LED is fixed, and the entered character which character is seen is entered.

A number of letters in the program is defined in the source code. Up to 20 characters can be entered with the keypad; 20 characters all if entered shifting process automatically start their own are more or less the quantity which character is entered after the # key is pressed, if the scrolling function is activated and characters that are written from right to left starts to slip.

Scrolling LED Text Schematic

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AT89C51 Scrolling LED project keil source code and proteus isis simulation schematic proteus ares PCB desing; author: Eyüp Süsler

AT89C51 Keypad Controlled Scrolling LED Dot Matrix Text

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Published: 2008/10/03 Tags: , , ,



1 Comment “AT89C51 Keypad Controlled Scrolling LED Dot Matrix Text

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