Where to get the circuit for programming of 89C52 microcontroller?

[sanchit]

hello i am very new to the field of microcontrollers. I have written the microcontroller program but not understandinng how to connect COM port with the microcontroller. Please help me guys. Tell me where will I get the ckt diag.

[Andy Ayre]

You need an RS232 transceiver, such as the MAX232. Take a look at the datasheets for those devices and they should have examples.

Andy