yun nba sinasabi mo na eprom + discrete logic for a (bunch of 5x7) LED moving message display??
Yes. This is what I said on in old thread on this forum.
But this needs a smart pattern/character generator PC-based software to generate the messages to be stored in the EPROM.
This is a bit difficult for scanning and right addressing is to be considered.
I think it is even easier to program directly an MCU to drive the dot-matrix LEDs than making the pattern generator software.
Its only advantage is that no more MCU is running and just a proof-of-concept.
Cost-wise, an MCU-controlled display is *MUCH* cheaper to build.