The DT9800 Series of USB function data acquisition modules offer 16SE/8DI inputs with 12- or 16-bit resolution, up to 100 ksamples/s throughput, 16 digital I/O lines, two user counter/timers, and optional 12- or 16-bit analog outputs. The modules come with a CD-ROM containing MS Windows 98/NT version 5.X and DT-Open Layers compliant drivers, a software calibration utility, a mini-application, and a comprehensive users' manual in pdf format.