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Microcontroller › 8051 › can any one give me idea about how to program serial communication without using pin rx and tx of microcontroller
hi
Hello,
It is not possible or rather very very tough, because the controller has inbuilt UART and these pins are designated for the transmission and receiption purpose.
It is the job of the UART to convert the RS232 protocol into correspoding electrical signals having characterstics defined by the signal.