This will allow you to update the display in a single step; a lot of example circuits skip this, it causes a slight glow as the led are turned on as the bits are shuffling through. You'll need to ...
The project is being controlled by AVR AT90S2313 to produce a display built of 50×7 LEDs that illustrates the effect of scrolling text. The computer is using the serial RS232 port to send the text or ...