The Personal Daq/3000 Series of 1-MHz /16-bit multifunction USB devices provide a variety of analog, digital and frequency I/O. DaqView 8.0 software is provided, an out-of-the-box data logging and viewing application. Support for all popular programming environments includes VisualBasic, VisualBasic. NET, Visual C++, Visual C#, and LabVIEW. Features include eight differential or 16 single-ended analog inputs, with seven programmable input ranges from ±100 mV to ±10V full scale; simple expansion (via PDQ30 option) results in 32DE/64SE analog inputs; and four counter inputs capable of measuring frequency, period, pulse width or quadrature encoders up to 20 MHz.