Look RS232 is a program for debugging serial data transfers between devices, such as PC, modem, projector, etc. using one of the accessible COM ports. Look RS232 will help you send data to the selected COM port, view device response in a handy form and trace the message traffic step by step or using break points. In Look RS-232 4.0 we extended the list of formats in which data may be entered or displayed. You may enter data in binary, octal, decimal, hexadecimal or symbol form.