USDM is a Windows PC based RS232/serial data protocol analysis software application designed for technicians, engineers, programmers, and students. Designed to display and record high speed serial data using the PC serial port(s). USDM is a Windows based application designed to run under Windows3.1, Windows95 or Windows98. Supports all possible baudrates including non standard, dual or single port operation, automated log file handling, file size limiting, scheduling, customizable screen and text colors. Displays and logs: Ascii, Decimal, Hex, Binary, Inverse Hex, Inverse Binary data, all RS232 line signals. Bar graph style displays to monitor statistics such as buffer size(KB), characters per second(CPS), Filesize(KB), time online(min/hr). High performance and low cost.