How to connect serially to computer

[amith]

I am working on this project:

http://www.engineersgarage.com/microcontroller/8051projects/stopwatch-AT89C51-circuit

HOW DO I CONNECT IT TO MY PC USING SERIAL CONNECTION?

http://www.engineersgarage.com/microcontroller/8051projects/interface-serialport-RS232-AT89C51-circuit

Using this circuit how do I modify this for my project?

How do I program the pins on serial port?

Please help! Time and help greatlt appreciated.

[dagakshay]

how can i program th epins on serial port???

you mean you want to send data from PC to the controller or the other way round controller to PC…
and what exctally you want to do? 

[G Thomas]

Hey he means sending the time from microcontroller to Pc.

Also is it possible to control the start from Pc instead manual switch

[Ishant]

 

[G Thomas]

?

[Author]

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