What my problem is that my connection from the controller a 18f45k22 is connected to max232. What i want to establish is to send an read characters. I see on my screen computer a result of the communication via a terminal simulator. Okay i load the software by a loader pic kit 3 and that load. But then in my routine if i push a number 1 on my laptop than must i see on the terminal this number. And also then my controller should send a signal out the controller what i program. But nothing seems work. The connection from my terminal if a load it must send character F and not mistaken characters. Is it the oscillator what was wrong. I know that it worked in the past. What i did was i used the internal oscillator and that worked. Than i solder a crystal on my print for use a external oscillator and then with the settings changed it went wrong and never saw the correct characters on the screen. is there who can help me further?