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One way would be to have a long series of shift registers to give 400 bits with parallel ouputs, one output to each pin. The desired 400 bit pattern is then serially input into the shift register. It would require 50 bytes of information serially out from the microcontroller, which should be fairly simple to program.Hlias said:In case I compromise with having only to states (H-L 0-5V) would I be able otherwise to control each of the 400 pins separately, only with one microcontroller?
Hlias said:I would also like to know whether it would be any more useful to use a microprocessor instead.