Help me in my project hook up to RS-232.

[xly]

HI GUYS.

I have a project I want that you help me.
I want to build a board and hook up it to
The pc with serial port (RS-232) and control
The board with a program that will be written
In C++ builder 6.
Until today I never work with ports and I don't
Know how I can do it.
I don't find useful books about this.
If anyone works with SERIAL PORT (RS-232)
Please say me a little about it that how I must work
Or if you know useful books please tell me.
I wait for your suggestion.

[kcbhiw]

xly, check out www.beyondlogic.org. they have a 4 section part about RS-232 interfacing. now be warned that RS-232 programming is by means no breeze, especially if you've never worked with ports before.

[Charliey]

It is far easier to build circuts and boards to interface with the parallel port, rather then the serial port.

For the serial port, you need a buffer and decoder chips, because the signal is sent serially. With a parallel connection, there are about 8 data pins, which can each be controlled directly.