Sampling control and viewing software used with the CF+ A/D and sensor cards from Handheld Design, Inc . Even if you don't have any hardware device, the software will still work by using a signal generator to simulate hardware so you can experience the software. Currently Handheld Design, Inc. has the following CF+ cards: humidity meter, accelerometer, magnetometer, general purpose analog-digital (A/D) convertor, analog-digial convertor with high-gain (>10000) amplifier, barometer and altimeter. Please visit its web site (http://handhelddesign.com) to see the latest list of products and their specifications.