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Hi All, do anyone here have any idea of how to change the printer port for 8051 microcontroller into USB port.
It is surely possible. I think you are talking about one stuff just like Keil's ULINK or Silicon Lab's EC3/EC5, etc. But what's your exact mean? Do you want change the LPT driver into USB driver both in hardware and software by yourself, Or are you just searching a ready-to-use black box? And either case does nothing with Keil tool-chain.