The PowerLab system is an integrated system of hardware and software designed to record, display and analyze experimental data. The hardware includes the PowerLab recording unit and various ancillary devices (frontends, pods and so on); the software consists of the LabChart and Scope application programs, and supplementary modules and extensions, which run on the computer to which the PowerLab is connected. Your /30 PowerLab has considerable computing power of its own and performs many tasks during data recording. Once the PowerLab transfers data to the computer, it is available for display, manipulation, printing, storage and retrieval. The PowerLab 4/30 has four inputs for recording external signals