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Re: programming keil at the video TISHITU Part 3/3 of 8051 microcontroller
click the Project--options for target...--out put,you should check the "Create HEX file",and then rebuild your target,you will find the hex file in you project folder!
You can use an oscilloscope to test the waveform at RXD point,to make sure was there any data in.and then if there was,it must be errors in your program.
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