> With 32 I/O from the 16F877, I think I can control a 16x16 LED
> matrix display.  Because of the limited current coming out from
> the I/O, I don't think a PIC can drive the LEDs directly.  Is
> there a driver IC or something to drive the LEDs?  Is there a
> better way to do this?

        Well, it all depends, are there going to be cases where all of them are
lit? A PIC output can drive one LED no problem, however the device also has
a limit as to how much it can drive, and your 16x16 LEDs are certainly going
to be more then a PIC could ouput.

        As for driver IC's, I don't see a need to use an IC when a jelly bean BJT
will do the job. Again, it depends on exactly what you are doing (how are
you multiplexing the display, etc.). TTYL

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