Measure, control, and regulate with the CESYS CEBO-STICK. This 4-channel 12-bit A/D measurement stick with USB interface is ideal for mobile use with a laptop and in any space-constrained environment. It can be used with Windows, Linux, and OS X. Four calibrated analog inputs and 3 digital I/O signals, as well as +5 volts and GND, are available at the 9-pin SUB-D connector. The measurement range is from 0 to 3.3 volts. The A/D converters operate at 12 bits, corresponding to a resolution of approximately 0.8 mV. The analog inputs are buffered by operational amplifiers, making them very high-impedance. Therefore, extended measurement ranges can be achieved by using resistors as voltage dividers.