Electronics Projects, AT89C51 Keypad Controlled Scrolling LED Dot Matrix Text article
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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
AT89C51 Scrolling LED project keil source code and proteus isis simulation schematic proteus ares PCB desing; acat89c51-keypad-controlled-scrolling-led-dot-matrix-text.rar
author: Eyüp Süsler