Communicating with a combinational logic circuit

Question

I imagine this is a quite broad question, but i am wondering how i can communicate with a combinational logic circuit using my PC.

Can i use the RS232 serial port? I have looked into this and it seems like it only has one output and one input.

• What if my circuit has inputs A,B,C,... and so on?
• What about my clock signal?
• USB -- wouldn't i need software drivers and a microchip?
• Converting the RS232 12V & -12V to 0V & 5V respectively
• DC power source for the gates and what not?

Answer 1

I will be using Arduino ( http://www.arduino.cc/ ). I seems really cool!