http://i681.photobucket.com/albums/v...ledcircuit.jpg

erm..anyone can teach me how to define d condition of d push on switch using CCS code. i wan the function: when push button 1 is pressed, LED 1 will on and LED 2 keep off. Then push on button 2 is pressed, LED 2 will on then LED 1 will turn off. And exclude d condition both push on buttons are pressed together.

really thx alot.....

 

Sounds like an SR Flip Flop, a uC is a bit of overkill.

Read the Wiki Article An SR Flip Flop and maybe a NAND Gate or two should do what you are trying to from how I'm understanding the application. Either way, seeing how the flip flop works should give you a very good start on the code if you must use a uC.

The schematic is about 4x too small to read.