Interfacing ADC0808 with Serial port (RS232) & 8051 microcontroller using clock from D-flip flop

[senthil kumar]

Hi friends……i tried the circuit listed in this site titled as “interfacing ADC0808 with serial port and 8051 microcontroller using clock from D-Flip flop”.

 

I gave the connections accordingly and also the same code i used for testing.It works ,but instead of the digital values of ADC i got the output in hyperterminal like this…..

 

how can i rectify the problem?I give the input from 10K POT to ADC and from ADC to AT89C51 and then to MAX232 to PC.

How to correct it?

[senthil kumar]

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this is the output i got in the serial port.Instead of digital values i got like this.

 

How to correct this problem.

[Steven]

You need to check the Hyper Terminal Configuration. The Baud Rate, Bit Number, Parity, Stop Bit need to match with the AT89C51 UART Setting.

[Author]

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