how to interface led for dot matrix?

[mishra12]

hi frens
i am doing project on dot matrix display curently i am using ready made blocks but i want to replace those blocks with high intensity leds help me on circuit .my display board use 89c52 and shit registers 7*30

 

[macer_0001]

Use ULN2803. This IC is an octal buffer can shrink the current to 500mA for each driver and can handle up to 50 volts. So that you can replace the LEDs or dot matrix with the capacity adequate to the said IC.

macer