Dear all, I am using a 16C73 and I am loading 11101110 (238) in to the TXREG. When I try to read the data in Visual basic using the MSComm function I end up with 40......? I am sending using asynchronous mode at 2400 baud Can anyone help or know where I can find some Visual basic code that can read the binary data from a PIC. Thanks for your help Jase